NLnet Labs - Unbound

Unbound 1.21.1

Download:: unbound-1.21.1.tar.gz | sha1 | sha256 | pgp sig
Date:: 3 October, 2024

Bug Fixes

Fix CVE-2024-8508, unbounded name compression could lead to denial of service.

Unbound 1.21.0

Download:: unbound-1.21.0.tar.gz | sha1 | sha256 | pgp sig
Date:: 15 August, 2024

Features

Fix #1071: [FR] Clear both in-memory and cachedb module cache with `unbound-control flush*` commands.
Fix #144: Port ipset to BSD pf tables.
Add dnstap-sample-rate that logs only 1/N messages, for high volume server environments. Thanks Dan Luther.
Add root key 38696 from 2024 for DNSSEC validation. It is added to the default root keys in unbound-anchor. The content can be inspected with `unbound-anchor -l`.
Merge #1090: Cookie secret file. Adds `cookie-secret-file: "unbound_cookiesecrets.txt"` option to store cookie secrets for EDNS COOKIE secret rollover. The remote control add_cookie_secret, activate_cookie_secret and drop_cookie_secret commands can be used for rollover, the command print_cookie_secrets shows the values in use.

Bug Fixes

Fix CAMP issues with global quota. Thanks to Huayi Duan, Marco Bearzi, Jodok Vieli, and Cagin Tanir from NetSec group, ETH Zurich.
Fix CacheFlush issues with limit on NS RRs. Thanks to Yehuda Afek, Anat Bremler-Barr, Shoham Danino and Yuval Shavitt (Tel-Aviv University and Reichman University).
Merge #1062: Fix potential overflow bug while parsing port in function cfg_mark_ports.
Fix for #1062: declaration before statement, avoid print of null, and redundant check for array size.
Fix to squelch udp connect errors in the log at low verbosity about invalid argument for IPv6 link local addresses.
Fix when the mesh jostle is exceeded that nameserver targets are marked as resolved, so that the lookup is not stuck on the requestlist.
Add missing common functions to tdir tests.
Merge #1070: Fix rtt assignement for low values of infra-cache-max-rtt.
Merge #1069: Fix unbound-control stdin commands for multi-process Unbounds.
Fix unbound-control commands that read stdin in multi-process operation (local_zones_remove, local_zones, local_datas_remove, local_datas, view_local_datas_remove, view_local_datas). They will be properly distributed to all processes. dump_cache and load_cache are no longer supported in multi-process operation.
Remove testdata/remote-threaded.tdir. testdata/09-unbound-control.tdir now checks both single and multi process/thread operation.
Merge #1073: fix null pointer dereference issue in function ub_ctx_set_fwd.
Fix to print a parse error when config is read with no name for a forward-zone, stub-zone or view.
Fix for parse end of forward-zone, stub-zone and view.
Fix for #1064: Fix that cachedb expired messages are considered insecure, and thus can be served to clients when dnssec is enabled.
Fix #1059: Intermittent DNS blocking failure with local-zone and always_nxdomain. Addition of local_zones dynamically via unbound-control was not finding the zone's parent correctly.
Fix #1064: Unbound 1.20 Cachedb broken?
Fix unused variable warning on compilation with no thread support.
unbound-control-setup: check openssl availability before doing anything, patch from Michael Tokarev.
Update patch to remove 'command' shell builtin and update error text.
Fix to enable that SERVFAIL is cached, for a short period, for more cases. In the cases where limits are exceeded.
Fix spelling of tcp-idle-timeout docs, from Michael Tokarev.
Merge #1078: Only check old pid if no username.
Fix #1079: tags from tagged rpz zones are no longer honored after upgrade from 1.19.3 to 1.20.0.
Fix for #1079: fix RPZ taglist in iterator callback that no client info is like no taglist intersection.
Fix to squelch connection reset by peer errors from log. And fix that the tcp read errors are labeled as initial for the first calls.
Merge #1080: AddressSanitizer detection in tdir tests and memory leak fixes.
Fix memory leak when reload_keep_cache is used and num-threads changes.
Fix memory leak on exit for unbound-dnstap-socket; creates false negatives during testing.
Fix memory leak in setup of dsa sig.
Fix typos for 'the the' in text.
Fix validation for repeated use of a DNAME record.
Add unit test for validation of repeated use of a DNAME record.
Fix #1091: Build fails with OpenSSL >= 3.0 built with OPENSSL_NO_DEPRECATED.
Fix #1092: Ubuntu 22.04 Jammy fails to compile unbound 1.20.0; by adding helpful text for the Python interpreter version and allowing the default pkg-config unavailability error message to be shown.
Fix pkg-config availability check in dnstap/dnstap.m4 and systemd.m4.
Explicitly set the RD bit for the mesh query flags when prefetching. These queries have no waiting client but they need to be treated as recursive.
Fix ip-ratelimit-cookie setting, it was not applied.
Fix to remove unused include from the readzone test program.
Fix unused variable warning in do_cache_remove.
Fix compile warning in worker pthread id printout.
Add unit test skip files and bison and flex output to gitignore.
Fix to use modstack_init in zonemd unit test.
Fix to remove unneeded linebreak in fptr_wlist.c.
Fix compile warnings in fptr_wlist.c.
Fix for repeated use of a DNAME record: first overallocate and then move the exact size of the init value to avoid false positive heap overflow reads from address sanitizers.
Fix to print details about the failure to lookup a DNSKEY record when validation fails due to the missing DNSKEY. Also for key prime and DS lookups.
Fix for neater printout for error for missing DS response.
Fix neater printout.
Fix #1099: Unbound core dump on SIGSEGV.
Fix for #1099: Fix to check for deleted RRset when the contents is updated and fetched after it is stored, and also check for a changed RRset.
Don't check for message TTL changes if the RRsets remain the same.
Fix that validation reason failure that uses string print uses separate buffer that is passed, from the scratch validation buffer.
Fixup algo_needs_reason string buffer length.
Fix shadowed error string variable in validator dnskey handling.
Update list of known EDE codes.
For #773: In contrib/unbound.service.in set unbound to start after network-online.target. Also for contrib/unbound_portable.service.in.
Fix #1103: unbound 1.20.0 segmentation fault with nghttp2.
For #1103: fix to also drop mesh state reference when a h2 reply is dropped.
Add RPZ tag tests in acl_interface.tdir.
For #1102: clearer text for using interface-* options for the loopback interface.
For #1103: fix to also drop mesh state reference when the discard limit is reached, when there is an error making a new recursion state and when the connection is dropped with is_drop.
For #1103: Fix to drop mesh state reference for the http2 stream associated with the reply, not the currently active stream. And it does not remove it twice on a mesh_send_reply call. The reply h2_stream is NULL when not in use, for more initialisation.
Fix dnstap wakeup, a running wakeup timer is left to expire and not increased, a timer is started when the dtio thread is sleeping, the timer set disabled when the dtio thread goes to sleep, and after sleep the thread checks to see if there are messages to log immediately.
Merge #1110: Make fallthrough explicit for libworker.c.
For #1110: Test for fallthrough attribute in configure and add fallthrough attribute annotations.
Fix compile when the compiler does not support the noreturn attribute.
Fix to have empty definition when not supported for weak attribute.
Fix uninitialized variable warning in create_tcp_accept_sock.
Fix link of dnstap without openssl.
Fix link of unbound-dnstap-socket without openssl.
Fix #1106: ratelimit-below-domain logs the wrong FROM address.
Cleanup ede.tdir test.
For #935 and #1104, clarify RPZ order and semantics.
Fix to document parameters of auth_zone_verify_zonemd_with_key.
Fix for #1114: Fix that cache fill for forward-host names is performed, so that with nonzero target-fetch-policy it fetches forwarder addresses and uses them from cache. Also updated that delegation point cache fill routines use CDflag for AAAA message lookups, so that its negative lookup stops a recursion since the cache uses the bit for disambiguation for dns64 but the recursion uses CDflag for the AAAA target lookups, so the check correctly stops a useless recursion by its cache lookup.
Fix dnstap test program, cleans up to have clean memory on exit, for tap_data_free, does not delete NULL items. Also it does not try to free the tail, specifically in the free of the list since that picked up the next item in the list for its loop causing invalid free. Added internal unit test to unbound-dnstap-socket for that.
Fix that the worker mem report with alloc stats does not attempt to print memory use of forwards and hints if they have been deleted already.
Fix that alloc stats has strdup checks, it stops debuggers from complaining about mismatch at free time.
Fix testbound for alloc stats strdup in util/alloc.c.
Fix that alloc stats for forwards and hints are printed, and when alloc stats is enabled, the unit test for unbound control waits for reloads to complete.
Fix that for windows the module startup is called and sets up the module-config.
Fix spelling for the cache-min-negative-ttl entry in the example.conf.

Unbound 1.20.0

Download:: unbound-1.20.0.tar.gz | sha1 | sha256 | pgp sig
Date:: 8 May, 2024

Features

The config for discard-timeout, wait-limit, wait-limit-cookie, wait-limit-netblock and wait-limit-cookie-netblock was added, for the fix to the DNSBomb issue.
Merge #1027: Introduce 'cache-min-negative-ttl' option.
Merge #1043 from xiaoxiaoafeifei: Add loongarch support; updates config.guess(2024-01-01) and config.sub(2024-01-01), verified with upstream.
Implement cachedb-check-when-serve-expired: yes option, default is enabled. When serve expired is enabled with cachedb, it first checks cachedb before serving the expired response.
Fix #876: [FR] can unbound-checkconf be silenced when configuration is valid?

Bug Fixes

Fix for the DNSBomb vulnerability CVE-2024-33655. Thanks to Xiang Li from the Network and Information Security Lab of Tsinghua University for reporting it.
Update doc/unbound.doxygen with 'doxygen -u'. Fixes option deprecation warnings and updates with newer defaults.
Remove unused portion from iter_dname_ttl unit test.
Fix validator classification of qtype DNAME for positive and redirection answers, and fix validator signature routine for dealing with the synthesized CNAME for a DNAME without previously encountering it and also for when the qtype is DNAME.
Fix qname minimisation for reply with a DNAME for qtype CNAME that answers it.
Fix doc test so it ignores but outputs unsupported doxygen options.
Fix #1021 Inconsistent Behavior with Changing rpz-cname-override and doing a unbound-control reload.
Merge #1028: Clearer documentation for tcp-idle-timeout and edns-tcp-keepalive-timeout.
Fix #1029: rpz trigger clientip and action rpz-passthru not working as expected.
Fix rpz that the rpz override is taken in case of clientip triggers. Fix that the clientip passthru action is logged. Fix that the clientip localdata action is logged. Fix rpz override action cname for the clientip trigger.
Fix to unify codepath for local alias for rpz cname action override.
Fix rpz for cname override action after nsdname and nsip triggers.
Fix that addrinfo is not kept around but copied and freed, so that log-destaddr uses a copy of the information, much like NSD does.
Merge #1030: Persist the openssl and expat directories for repeated Windows builds.
Fix that rpz CNAME content is limited to the max number of cnames.
Fix rpz, it follows iterator CNAMEs for nsip and nsdname and sets the reply query_info values, that is better for debug logging.
Fix rpz that copies the cname override completely to the temp region, so there are no references to the rpz region.
Add rpz unit test for nsip action override.
Fix rpz for qtype CNAME after nameserver trigger.
Fix rpz so that rpz CNAME can apply after rpz CNAME. And fix that clientip and nsip can give a CNAME.
Fix localdata and rpz localdata to match CNAME only if no direct type match is available.
Merge #831 from Pierre4012: Improve Windows NSIS installer script (setup.nsi).
For #831: Format text, use exclamation icon and explicit label names.
Fix name of unit test for subnet cache response.
Fix #1032: The size of subnet_msg_cache calculation mistake cause memory usage increased beyond expectations.
Fix for #1032, add safeguard to make table space positive.
Fix comment in lruhash space function.
Fix to add unit test for lruhash space that exercises the routines.
Fix that when the server truncates the pidfile, it does not follow symbolic links.
Fix that the server does not chown the pidfile.
Fix #1034: DoT forward-zone via unbound-control.
Fix for crypto related failures to have a better error string.
Fix #1035: Potential Bug while parsing port from the "stub-host" string; also affected forward-zones and remote-control host directives.
Fix #369: dnstap showing extra responses; for client responses right from the cache when replying with expired data or prefetching.
Fix #1040: fix heap-buffer-overflow issue in function cfg_mark_ports of file util/config_file.c.
For #1040: adjust error text and disallow negative ports in other parts of cfg_mark_ports.
Fix comment syntax for view function views_find_view.
Fix #595: unbound-anchor cannot deal with full disk; it will now first write out to a temp file before replacing the original one, like Unbound already does for auto-trust-anchor-file.
Fixup compile without cachedb.
Add test for cachedb serve expired.
Extended test for cachedb serve expired.
Fix makefile dependencies for fake_event.c.
Fix cachedb for serve-expired with serve-expired-reply-ttl.
Fix to not reply serve expired unless enabled for cachedb.
Fix cachedb for serve-expired with serve-expired-client-timeout.
Fixup unit test for cachedb server expired client timeout with a check if response if from upstream or from cachedb.
Fixup cachedb to not refetch when serve-expired-client-timeout is used.
Merge #1049 from Petr Menšík: Py_NoSiteFlag is not needed since Python 3.8
Fix #1048: Update ax_pkg_swig.m4 and ax_pthread.m4.
Fix configure, autoconf for #1048.
Add checklock feature verbose_locking to trace locks and unlocks.
Fix edns subnet to sort rrset references when storing messages in the cache. This fixes a race condition in the rrset locks.
Merge #1053: Remove child delegations from cache when grandchild delegations are returned from parent.
Fix ci workflow for macos for moved install locations.
Fix configure flto check error, by finding grep for it.
Merge #1041: Stub and Forward unshare. This has one structure for them and fixes #1038: fatal error: Could not initialize thread / error: reading root hints.
Fix to disable fragmentation on systems with IP_DONTFRAG, with a nonzero value for the socket option argument.
Fix doc unit test for out of directory build.
Fix cachedb with serve-expired-client-timeout disabled. The edns subnet module deletes global cache and cachedb cache when it stores a result, and serve-expired is enabled, so that the global reply, that is older than the ecs reply, does not return after the ecs reply expires.
Add unit tests for cachedb and subnet cache expired data.
Man page entry for unbound-checkconf -q.
Cleanup unnecessary strdup calls for EDE strings.
Fix doxygen comment for errinf_to_str_bogus.

Unbound 1.19.3

Download:: unbound-1.19.3.tar.gz | sha1 | sha256 | pgp sig
Date:: 14 March, 2024

Features

Merge PR #973: Use the origin (DNAME) TTL for synthesized CNAMEs as per RFC 6672.

Bug Fixes

Fix unit test parse of origin syntax.
Use 127.0.0.1 explicitly in tests to avoid delays and errors on newer systems.
Fix #964: config.h.in~ backup file in release tar balls.
Merge #968: Replace the obsolescent fgrep with grep -F in tests.
Merge #971: fix 'WARNING: Message has 41 extra bytes at end'.
Fix #969: [FR] distinguish Do53, DoT and DoH in the logs.
Fix dnstap that assertion failed on logging other than UDP and TCP traffic. It lists it as TCP traffic.
Fix to sync the tests script file common.sh.
iana portlist update.
Updated IPv4 and IPv6 address for b.root-servers.net in root hints.
Update test script file common.sh.
Fix tests to use new common.sh functions, wait_logfile and kill_from_pidfile.
Fix #974: doc: default number of outgoing ports without libevent.
Merge #975: Fixed some syntax errors in rpl files.
Fix root_zonemd unit test, it checks that the root ZONEMD verifies, now that the root has a valid ZONEMD.
Update example.conf with cookie options.
Merge #980: DoH: reject non-h2 early. To fix #979: Improve errors for non-HTTP/2 DoH clients.
Merge #985: Add DoH and DoT to dnstap message.
Fix #983: Sha1 runtime insecure change was incomplete.
Remove unneeded newlines and improve indentation in remote control code.
Merge #987: skip edns frag retry if advertised udp payload size is not smaller.
Fix unit test for #987 change in udp1xxx retry packet send.
Merge #988: Fix NLnetLabs#981: dump_cache truncates large records.
Fix to link with -lcrypt32 for OpenSSL 3.2.0 on Windows.
Fix to link with libssp for libcrypto and getaddrinfo check for only header. Also update crosscompile to remove ssp for 32bit.
Merge #993: Update b.root-servers.net also in example config file.
Update workflow for ports to use newer openssl on windows compile.
Fix warning for windres on resource files due to redefinition.
Fix for #997: Print details for SSL certificate failure.
Update error printout for duplicate trust anchors to include the trust anchor name (relates to #920).
Update message TTL when using cached RRSETs. It could result in non-expired messages with expired RRSETs (non-usable messages by Unbound).
Merge #999: Search for protobuf-c with pkg-config.
Fix #1006: Can't find protobuf-c package since #999.
Fix documentation for access-control in the unbound.conf man page.
Merge #1010: Mention REFUSED has the TC bit set with unmatched allow_cookie acl in the manpage. It also fixes the code to match the documentation about clients with a valid cookie that bypass the ratelimit regardless of the allow_cookie acl.
Document the suspend argument for process_ds_response().
Move github workflows to use checkoutv4.
Fix edns subnet replies for scope zero answers to not get stored in the global cache, and in cachedb, when the upstream replies without an EDNS record.
Fix for #1022: Fix ede prohibited in access control refused answers.
Fix unbound-control-setup.cmd to use 3072 bits so that certificates are long enough for newer OpenSSL versions.
Fix TTL of synthesized CNAME when a DNAME is used from cache.
Fix unbound-control-setup.cmd to have CA v3 basicConstraints, like unbound-control-setup.sh has.

Unbound 1.19.2

Download:: unbound-1.19.2.tar.gz | sha1 | sha256 | pgp sig
Date:: 7 March, 2024

Bug Fixes

Fix CVE-2024-1931, Denial of service when trimming EDE text on positive replies.

Unbound 1.19.1

Download:: unbound-1.19.1.tar.gz | sha1 | sha256 | pgp sig
Date:: 13 February, 2024

Bug Fixes

Fix CVE-2023-50387, DNSSEC verification complexity can be exploited to exhaust CPU resources and stall DNS resolvers.
Fix CVE-2023-50868, NSEC3 closest encloser proof can exhaust CPU.

Unbound 1.19.0

Download:: unbound-1.19.0.tar.gz | sha1 | sha256 | pgp sig
Date:: 8 November, 2023

Features

Fix #850: [FR] Ability to use specific database in Redis, with new redis-logical-db configuration option.
Merge #944: Disable EDNS DO. Disable the EDNS DO flag in upstream requests. This can be helpful for devices that cannot handle DNSSEC information. But it should not be enabled otherwise, because that would stop DNSSEC validation. The DNSSEC validation would not work for Unbound itself, and also not for downstream users. Default is no. The option is disable-edns-do: no
Expose the script filename in the Python module environment 'mod_env' instead of the config_file structure which includes the linked list of scripts in a multi Python module setup; fixes #79.
Expose the configured listening and outgoing interfaces, if any, as a list of strings in the Python 'config_file' class instead of the current Swig object proxy; fixes #79.
Mailing list patches from Daniel Gröber for DNS64 fallback to plain AAAA when no A record exists for synthesis, and minor DNS64 code refactoring for better readability.
Merge #951: Cachedb no store. The cachedb-no-store: yes option is used to stop cachedb from writing messages to the backend storage. It reads messages when data is available from the backend. The default is no.

Bug Fixes

Fix for version generation race condition that ignored changes.
Fix #942: 1.18.0 libunbound DNS regression when built without OpenSSL.
Fix for WKS call to getservbyname that creates allocation on exit in unit test by testing numbers first and testing from the services list later.
Fix autoconf 2.69 warnings in configure.
Fix #927: unbound 1.18.0 make test error. Fix make test without SHA1.
Merge #931: Prevent warnings from -Wmissing-prototypes.
Fix to scrub resource records of type A and AAAA that have an inappropriate size. They are removed from responses.
Fix to move msgparse_rrset_remove_rr code to util/msgparse.c.
Fix to add EDE text when RRs have been removed due to length.
Fix to set ede match in unit test for rr length removal.
Fix to print EDE text in readable form in output logs.
Fix send of udp retries when ENOBUFS is returned. It stops looping and also waits for the condition to go away. Reported by Florian Obser.
Fix authority zone answers for obscured DNAMEs and delegations.
Merge #936: Check for c99 with autoconf versions prior to 2.70.
Fix to remove two c99 notations.
Fix rpz tcp-only action with rpz triggers nsdname and nsip.
Fix misplaced comment.
Merge #881: Generalise the proxy protocol code.
Fix #946: Forwarder returns servfail on upstream response noerror no data.
Fix edns subnet so that queries with a source prefix of zero cause the recursor send no edns subnet option to the upstream.
Fix that printout of EDNS options shows the EDNS cookie option by name.
Fix infinite loop when reading multiple lines of input on a broken remote control socket. Addesses #947 and #948.
Fix #949: "could not create control compt".
Fix that cachedb does not warn when serve-expired is disabled about use of serve-expired-reply-ttl and serve-expired-client-timeout.
Fix for #949: Fix pythonmod/ubmodule-tst.py for Python 3.x.
Better fix for infinite loop when reading multiple lines of input on a broken remote control socket, by treating a zero byte line the same as transmission end. Addesses #947 and #948.
For multi Python module setups, clean previously parsed module functions in __main__'s dictionary, if any, so that only current module functions are registered.
Fix #954: Inconsistent RPZ handling for A record returned along with CNAME.
Fixes for the DNS64 patches.
Update the dns64_lookup.rpl test for the DNS64 fallback patch.
Merge #955 from buevsan: fix ipset wrong behavior.
Update testdata/ipset.tdir test for ipset fix.
Fix to print detailed errors when an SSL IO routine fails via SSL_get_error.
Clearer configure text for missing protobuf-c development libraries.
autoconf.
Merge #930 from Stuart Henderson: add void to log_ident_revert_to_default declaration.
Fix #941: dnscrypt doesn't work after upgrade to 1.18 with suggestion by dukeartem to also fix the udp_ancil with dnscrypt.
Fix SSL compile failure for definition in log_crypto_err_io_code_arg.
Fix SSL compile failure for other missing definitions in log_crypto_err_io_code_arg.
Fix compilation without openssl, remove unused function warning.
Mention flex and bison in README.md when building from repository source.

Unbound 1.18.0

Download:: unbound-1.18.0.tar.gz | sha1 | sha256 | pgp sig
Date:: 30 August, 2023

Features

Merge #826: Аdd a metric about the maximum number of collisions in lrushah.
Set max-udp-size default to 1232. This is the same default value as the default value for edns-buffer-size. It restricts client edns buffer size choices, and makes unbound behave similar to other DNS resolvers. The new choice, down from 4096 means it is harder to get large responses from Unbound. Thanks to Xiang Li, from NISL Lab, Tsinghua University.
Add harden-unknown-additional option. It removes unknown records from the authority section and additional section. Thanks to Xiang Li, from NISL Lab, Tsinghua University.
Merge #819: Added new static zone type block_a to suppress all A queries for specific zones.
Fix #835: [FR] Ability to use Redis unix sockets.
Fix #833: [FR] Ability to set the Redis password.
Merge #882 from vvfedorenko: Features/dropqueuedpackets, with sock-queue-timeout option that drops packets that have been in the socket queue for too long. Added statistics num.queries_timed_out and query.queue_time_us.max that track the socket queue timeouts.
Merge #722 from David 'eqvinox' Lamparter: NAT64 support.
Fix #888: [FR] Use kernel timestamps for dnstap.
Merge #903: contrib: add yocto compatible init script.
Merge #892: Add cachedb hit stat. Introduces 'num.query.cachedb' as a new statistical counter.
Merge #739: Add SVCB dohpath support.
Merge #802: add validation EDEs to queries where the CD bit is set.
Merge #664 from tilan7763: Add prefetch support for subnet cache entries.
Merge #759 from Tom Carpay: Add EDE (RFC8914) caching.
Merge #790 from Tom Carpay: Add support for EDE caching in cachedb and subnetcache.
Merge PR #762: Downstream DNS Server Cookies a la RFC7873 and RFC9018. Create server cookies for clients that send client cookies. This needs to be explicitly turned on in the config file with: `answer-cookie: yes`. A `cookie-secret:` can be configured for anycast setups. Without one, a random cookie secret is generated. The acl option `allow_cookie` allows queries with either a valid cookie or over a stateful transport. The statistics output has `queries_cookie_valid` and `queries_cookie_client` and `queries_cookie_invalid` information. The `ip\-ratelimit\-cookie:` value determines a rate limit for queries with cookies, if desired.

Bug Fixes

Fix #823: Response change to NODATA for some ANY queries since 1.12, tested on 1.16.1.
Fix python module install path detection.
Fix python version detection in configure.
Improve documentation for #826, describe the large collisions amount.
Fix not following cleared RD flags potentially enables amplification DDoS attacks, reported by Xiang Li and Wei Xu from NISL Lab, Tsinghua University. The fix stops query loops, by refusing to send RD=0 queries to a forwarder, they still get answered from cache.
Set default for harden-unknown-additional to no. So that it does not hamper future protocol developments.
Fix test for new default.
Fix acx_nlnetlabs.m4 for -Wstrict-prototypes.
Add duration variable for speed_local.test.
Fix #841: Unbound won't build with aaaa-filter-iterator.patch.
Fix to ignore entirely empty responses, and try at another authority. This turns completely empty responses, a type of noerror/nodata into a servfail, but they do not conform to RFC2308, and the retry can fetch improved content.
Fix unit tests for spurious empty messages.
Fix consistency of unit test without roundrobin answers for the cnametooptout unit test.
Fix to git ignore the library symbol file that configure can create.
Allow TTL refresh of expired error responses.
Add testcase for refreshing expired error responses.
Clean up iterator/iterator.c::error_response_cache() and allow for better interaction with serve-expired, prefetch and cached error responses.
Fix #825: Unexpected behavior with client-subnet-always-forward and serve-expired
Fix for #852: Completion of error handling.
Fix unbound-dnstap-socket test program to reply the finish frame over a TLS connection correctly.
Fix ssl.h include brackets, instead of quotes.
Fix #812, fix #846, by using the SSL_OP_IGNORE_UNEXPECTED_EOF option to ignore the unexpected eof while reading in openssl >= 3.
iana portlist update.
Fix issue #851: reserved identifier violation
Fix issue #676: Unencrypted query is sent when forward-tls-upstream: yes is used without tls-cert-bundle
Extra consistency check to make sure that when TLS is requested, either we set up a TLS connection or we return an error.
Fix #870: NXDOMAIN instead of NOERROR rcode when asked for existing CNAME record.
Fix for #870: Add test case for the qname minimisation and CNAME.
Fix build badge, from failing travis link to github ci action link.
Merge #875: change obsolete txt URL in unbound-anchor.c to point to RFC 7958, and Fix #874.
Fix for #878: Invalid IP address in unbound.conf causes Segmentation Fault on OpenBSD.
Fix for #882: small changes, date updated in Copyright for util/timeval_func.c and util/timeval_func.h. Man page entries and example entry.
Fix for #882: document variable to stop doxygen warning.
Fix issue #860: Bad interaction with 0 TTL records and serve-expired
Fix RPZ IP responses with trigger rpz-drop on cache entries, that they are dropped.
For #722: minor fixes, formatting, refactoring.
Fix #885: Error: util/configlexer.c: No such file or directory, adds error messages explaining to install flex and bison.
Fix to remove unused whitespace from acx_nlnetlabs.m4 and config.h.
Fix doxygen in addr_to_nat64 header definition.
Fix warning in windows compile, in set_recvtimestamp.
Fix to print debug log for ancillary data with correct IP address.
Fix RPZ removal of client-ip, nsip, nsdname triggers from IXFR.
Fix to remove unused variables from RPZ clientip data structure.
Fix unbound-dnstap-socket printout when no query is present.
Fix unbound-dnstap-socket time fraction conversion for printout.
Merge #896: Fix: #895: pythonmodule: add all site-packages directories to sys.path.
Fix #895: python + sysconfig gives ANOTHER path comparing to distutils.
Fix for uncertain unit test for doh buffer size events.
Properly handle all return values of worker_check_request during early EDE code.
Do not check the incoming request more than once.
Fix for issue #887 (Timeouts to forward servers on BSD based system with ASLR)
Probably fixes #516 (Stream reuse does not work on Windows) as well
Remove warning about unknown cast-function-type warning pragma.
Fix python modules with multiple scripts, by incrementing reference counts.
More fixes for reference counting for python module and clean up failure code.
Merge #827 from rcmcdonald91: Eliminate unnecessary Python reloading which causes memory leaks.
Fix #906: warning: ‘Py_SetProgramName’ is deprecated.
Fix dereference of NULL variable warning in mesh_do_callback.
Code cleanup for sldns_str2wire_svcparam_key_lookup.
For #802: Cleanup comments and add RCODE check for CD bit test case.
Skip the 00-lint test. splint is not maintained; it either does not work or produces false positives. Static analysis is handled in the clang test.
For #664: Easier code flow for subnetcache prefetching.
For #664: Add testcase.
For #664: Rename subnet_prefetch tests to subnet_global_prefetch to differentiate from the new subnet prefetch support.
Merge #880 from chipitsine: services/authzone.c: remove redundant check.
More clear description of the different auth-zone behaviors on the man page.
Merge #909 from headshog: Numeric truncation when parsing TYPEXX and CLASSXX representation.
For #909: Fix return values.
Merge #901 from Sergei Trofimovich: config: improve handling of unknown modules.
For #909: Fix RR class comparison.
Merge #857 from eaglegai: fix potential memory leaks when errors happen.
For #857: fix mixed declarations and code.
Merge #118 from mibere: Changed verbosity level for Redis init & deinit.
Merge #390 from Frank Riley: Add missing callbacks to the python module.
Cleaner failure code for callback functions in interface.i.
Merge #889 from borisVanhoof: Free memory in error case + remove unused function.
For #889: use netcat-openbsd instead of netcat-traditional.
For #889: Account for num_detached_states before possible mesh_state_delete when erroring out.
Fix unused variable compile warning for kernel timestamps in netevent.c
Merge #911 from natalie-reece: Exclude EDE before other EDNS options when there isn't enough space.
For #911: Try to trim EXTRA-TEXT (and LDNS_EDE_OTHER options altogether) before giving up on attaching EDE options.
More braces and formatting for Fix for EDNS EDE size calculation to avoid future bugs.
Fix to use the now cached EDE, if any, for CD_bit queries.
Fix for EDNS EDE size calculation.
Move a cache reply callback in worker.c closer to the cache reply generation.
Fix regional_alloc_init for potential unaligned source of the copy.
Fix ip_ratelimit test to work with dig that enables DNS cookies.
Fix for iter_dec_attempts that could cause a hang, part of capsforid and qname minimisation, depending on the settings.
Fix uninitialized memory passed in padding bytes of cmsg to sendmsg.
Fix stat_values test to work with dig that enables DNS cookies.
Debug Windows ci workflow.
Fix windows ci workflow to install bison and flex.
Fix for #925: unbound.service: Main process exited, code=killed, status=11/SEGV. Fixes cachedb configuration handling.
Fix #923: processQueryResponse() THROWAWAY should be mindful of fail_reply.
Fix unit test for unbound-control to work when threads are disabled, and fix cache dump check.
Fix compile error on NetBSD in util/netevent.h.

Unbound 1.17.1

Download:: unbound-1.17.1.tar.gz | sha1 | sha256 | pgp sig
Date:: 12 January, 2023

Features

Expose 'statistics-inhibit-zero' as a configuration option; the default value retains Unbound's behavior.
Expose 'max-sent-count' as a configuration option; the default value retains Unbound's behavior.
Merge #461 from Christian Allred: Add max-query-restarts option. Exposes an internal configuration but the default value retains Unbound's behavior.
Merge #569 from JINMEI Tatuya: add keep-cache option to 'unbound-control reload' to keep caches.

Bug Fixes

Merge #768 from fobser: Arithmetic on a pointer to void is a GNU extension.
In unit test, print python script name list correctly.
testcode/dohclient sets log identity to its name.
Clarify the use of MAX_SENT_COUNT in the iterator code.
Fix that cachedb does not store failures in the external cache.
Merge #767 from jonathangray: consistently use IPv4/IPv6 in unbound.conf.5.
Fix to ignore tcp events for closed comm points.
Fix to make sure to not read again after a tcp comm point is closed.
Fix #775: libunbound: subprocess reap causes parent process reap to hang.
iana portlist update.
Complementary fix for distutils.sysconfig deprecation in Python 3.10 to commit 62c5039ab9da42713e006e840b7578e01d66e7f2.
Fix #779: [doc] Missing documention in ub_resolve_event() for callback parameter was_ratelimited.
Ignore expired error responses.
Merge #720 from jonathangray: fix use after free when WSACreateEvent() fails.
Fix for the ignore of tcp events for closed comm points, preserve the use after free protection features.
Fix #782: Segmentation fault in stats.c:404.
Add SVCB and HTTPS to the types removed by 'unbound-control flush'.
Clear documentation for interactivity between the subnet module and the serve-expired and prefetch configuration options.
Fix #773: When used with systemd-networkd, unbound does not start until systemd-networkd-wait-online.service times out.
Merge #808: Wrap Makefile script's directory variables in quotes.
Fix to wrap Makefile scripts directory in quotes for uninstall.
Fix windows compile for libunbound subprocess reap comm point closes.
Update github workflows to use checkout v3.
Fix wildcard in hyperlocal zone service degradation, reported by Sergey Kacheev.

Unbound 1.17.0

Download:: unbound-1.17.0.tar.gz | sha1 | sha256 | pgp sig
Date:: 13 October, 2022

Features

Merge #753: ACL per interface. (New interface-* configuration options).
Merge #760: PROXYv2 downstream support. (New proxy-protocol-port configuration option).

Bug Fixes

Fix #728: alloc_reg_obtain() core dump. Stop double alloc_reg_release when serviced_create fails.
Fix edns subnet so that scope 0 answers only match sourcemask 0 queries for answers from cache if from a query with sourcemask 0.
Fix unittest for edns subnet change.
Merge #730 from luisdallos: Fix startup failure on Windows 8.1 due to unsupported IPV6_USER_MTU socket option being set.
Fix ratelimit inconsistency, for ip-ratelimits the value is the amount allowed, like for ratelimits.
Fix #734 [FR] enable unbound-checkconf to detect more (basic) errors.
Fix to log accept error ENFILE and EMFILE errno, but slowly, once per 10 seconds. Also log accept failures when no slow down is used.
Fix to avoid process wide fcntl calls mixed with nonblocking operations after a blocked write.
Patch from Vadim Fedorenko that adds MSG_DONTWAIT to receive operations, so that instruction reordering does not cause mistakenly blocking socket operations.
Fix to wait for blocked write on UDP sockets, with a timeout if it takes too long the packet is dropped.
Fix for wait for udp send to stop when packet is successfully sent.
Fix #741: systemd socket activation fails on IPv6.
Fix to update config tests to fix checking if nonblocking sockets work on OpenBSD.
Slow down log frequency of write wait failures.
Fix to set out of file descriptor warning to operational verbosity.
Fix to log a verbose message at operational notice level if a thread is not responding, to stats requests. It is logged with thread identifiers.
Remove include that was there for debug purposes.
Fix to check pthread_t size after pthread has been detected.
Convert tdir tests to use the new skip_test functionality.
Remove unused testcode/mini_tpkg.sh file.
Better output for skipped tdir tests.
Fix doxygen warning in respip.h.
Fix to remove erroneous TC flag from TCP upstream.
Fix test tdir skip report printout.
Fix windows compile, the identifier interface is defined in headers.
Fix to close errno block in comm_point_tcp_handle_read outside of ifdef.
Fix static analysis report to remove dead code from the rpz_callback_from_iterator_module function.
Fix to clean up after the acl_interface unit test.
Merge #764: Leniency for target discovery when under load (for NRDelegation changes).
Use DEBUG_TDIR from environment in mini_tdir.sh for debugging.
Fix string comparison in mini_tdir.sh.
Make ede.tdir test more predictable by using static data.
Fix checkconf test for dnscrypt and proxy port.
Fix dnscrypt compile for proxy protocol code changes.
Fix to stop responses with TC flag from resulting in partial responses. It retries to fetch the data elsewhere, or fails the query and in depth fix removes the TC flag from the cached item.
Fix proxy length debug output printout typecasts.
Fix to stop possible loops in the tcp reuse code (write_wait list and tcp_wait list). Based on analysis and patch from Prad Seniappan and Karthik Umashankar.
Fix PROXYv2 header read for TCP connections when no proxied addresses are provided.

Unbound 1.16.3

Download:: unbound-1.16.3.tar.gz | sha1 | sha256 | pgp sig
Date:: 21 September, 2022

Bug Fixes

Patch for CVE-2022-3204 Non-Responsive Delegation Attack.

Unbound 1.16.2

Download:: unbound-1.16.2.tar.gz | sha1 | sha256 | pgp sig
Date:: 1 August, 2022

Features

Merge #718: Introduce infra-cache-max-rtt option to config max retransmit timeout.

Bug Fixes

Fix the novel ghost domain issues CVE-2022-30698 and CVE-2022-30699.
Fix bug introduced in 'improve val_sigcrypt.c::algo_needs_missing for one loop pass'.
Merge PR #668 from Cristian Rodríguez: Set IP_BIND_ADDRESS_NO_PORT on outbound tcp sockets.
Fix verbose EDE error printout.
Fix dname count in sldns parse type descriptor for SVCB and HTTPS.
For windows crosscompile, fix setting the IPV6_MTU socket option equivalent (IPV6_USER_MTU); allows cross compiling with latest cross-compiler versions.
Merge PR 714: Avoid treat normal hosts as unresponsive servers. And fixup the lock code.
iana portlist update.
Update documentation for 'outbound-msg-retry:'.
Tests for ghost domain fixes.

Unbound 1.16.1

Download:: unbound-1.16.1.tar.gz | sha1 | sha256 | pgp sig
Date:: 11 July, 2022

Features

Fix #704: [FR] Statistics counter for number of outgoing UDP queries sent; introduces 'num.query.udpout' to the 'unbound-control stats' command.

Bug Fixes

makedist.sh picks up 32bit libssp-0.dll when 32bit compile.
Fix for edns client subnet to respect not looking in its cache when instructed to do so (e.g., prefetch).
Merge PR #688: Rpz url notify issue.
Note in the unbound.conf text that NOTIFY is allowed from the 'url:' addresses for auth and rpz zones.
Remove unused LDNS function check for GOST Engine unloading.
Fix for loading locally stored zones that have lines with blanks or blanks and comments.
Fix #663: use after free issue with edns options.
Clarify -v flag manpage entry (#705)
Fix test program dohclient close to use portability routine.
Show the output of the exact .rpl run that failed with 'make test'.
Fix for cached 0 TTL records to not trigger prefetching when serve-expired-client-timeout is set.
Add debug option to the mini_tdir.sh test code.
Fix to not count cached NXDOMAIN for MAX_TARGET_NX.
Allow fallback to the parent side when MAX_TARGET_NX is reached. This will also allow MAX_TARGET_NX more NXDOMAINs.
iana portlist update.
Fix detection of libz on windows compile with static option.
Fix compile warning for windows compile.
Merge PR #706: NXNS fallback.
From #706: Cached NXDOMAIN does not increase the target nx responses.
From #706: Don't generate parent side queries if we already have the lame records in cache.
From #706: When a lame address is the best choice, don't try to generate target queries when the missing targets are all lame.
Merge PR #671 from Petr Menšík: Disable ED25519 and ED448 in FIPS mode on openssl3.
Merge PR #660 from Petr Menšík: Sha1 runtime insecure.
For #660: formatting, less verbose logging, add EDE information.
Fix for correct openssl error when adding windows CA certificates to the openssl trust store.
Improve val_sigcrypt.c::algo_needs_missing for one loop pass.
Reintroduce documentation and more EDE support for val_sigcrypt.c::dnskeyset_verify_rrset_sig.
Fix bug introduced in 'improve val_sigcrypt.c::algo_needs_missing for one loop pass'.
Merge PR #668 from Cristian Rodríguez: Set IP_BIND_ADDRESS_NO_PORT on outbound tcp sockets.

Unbound 1.16.0

Download:: unbound-1.16.0.tar.gz | sha1 | sha256 | pgp sig
Date:: 2 June, 2022

Features

Merge PR #604: Add basic support for EDE (RFC8914).

Bug Fixes

Fix #412: cache invalidation issue with CNAME+A.
Fix that TCP interface does not use TLS when TLS is also configured.
Fix #624: Unable to stop Unbound in Windows console (does not respond to CTRL+C command).
Fix #618: enabling interface-automatic disables DNS-over-TLS. Adds the option to list interface-automatic-ports.
Remove debug info from #618 fix.
Fix #628: A rpz-passthru action is not ending RPZ zone processing.
Fix for #628: fix rpz-passthru for qname trigger by localzone type.
Fix that address not available is squelched from the logs for udp connect failures. It is visible on verbosity 4 and more.
Merge #631 from mollyim: Replace OpenSSL's ERR_PACK with ERR_GET_REASON.
Fix to detect that no IPv6 support means that IPv6 addresses are useless for delegation point lookups.
update Makefile dependencies.
Fix check interface existence for support detection in remote lookup.
Fix #633: Document unix domain socket support for unbound-control.
Fix for #633: updated fix with new text.
Fix edns client subnet to add the option based on the option list, so that it is not state dependent, after the state fix of #605 for double EDNS options.
Fix for edns client subnet option add fix in removal code, from review.
Fix #630: Unify the RPZ log messages.
Merge #623 from rex4539: Fix typos.
Fix pythonmod for change in iter_dp_is_useless function prototype.
Fix compile warnings for printf ll format on mingw compile.
Merge PR #632 from scottrw93: Match cnames in ipset.
Various fixes for #632: variable initialisation, convert the qinfo to str once, accept trailing dot in the local-zone ipset option.
Fix #637: Integer Overflow in sldns_str2period function.
Fix for #637: fix integer overflow checks in sldns_str2period.
Fix configure for python to use sysutils, because distutils is deprecated. It uses sysutils when available, distutils otherwise.
Merge #644: Make `install-lib` make target install the pkg-config file.
Fix to ensure uniform handling of spaces and tabs when parsing RRs.
Fix to describe auth-zone and other configuration at the local-zone configuration option, to allow for more broadly view of the options.
Merge PR #648 from eaglegai: fix -q doesn't work when use with 'unbound-control stats_shm'.
Fix #651: [FR] Better logging for refused queries.
Fix spelling error in comment in sldns_str2wire_svcparam_key_lookup.
Fix zonemd check to allow unsupported algorithms to load. If there are only unsupported algorithms, or unsupported schemes, and no failed or successful other ZONEMD records, or malformed or bad ZONEMD records, the unsupported records allow the zone load.
Fix zonemd unsupported algo check.
Fix zonemd unsupported algo check reason to not copy to next record, and check for success for debug printout.
Fix zonemd unsupported algo check to print unsupported reason before zeroing it.
Fix zonemd unsupported algo check to set reason to NULL before the check routine, but after malformed checks, to get the correct NULL output when the digest matches.
Fix #670: SERVFAIL problems with unbound 1.15.0 running on OpenBSD 7.1.
Fix Python build in non-source directory; based on patch by Michael Tokarev.
Fix #673: DNS over TLS: error: SSL_handshake syscall: No route to host.
Merge #677: Allow using system certificates not only on Windows, from pemensik.
For #677: Added tls-system-cert to config parser and documentation.
Fix #417: prefetch and ECS causing cache corruption when used together.
Fix #678: [FR] modify behaviour of unbound-control rpz_enable zone, by updating unbound-control's documentation.
Fix typos in config_set_option for the 'num-threads' and 'ede-serve-expired' options.
Fix to silence test for ede error output to the console from the test setup script.
Fix ede test to not use default pidfile, and use local interface.
Fix some lint type warnings.
Fix #684: [FTBS] configure script error with libmnl on openSUSE 15.3 (and possibly other distributions)

Unbound 1.15.0

Download:: unbound-1.15.0.tar.gz | sha1 | sha256 | pgp sig
Date:: 10 February, 2022

Features

Fix #596: unset the RA bit when a query is blocked by an unbound RPZ nxdomain reply. The option rpz-signal-nxdomain-ra allows to signal that a domain is externally blocked to clients when it is blocked with NXDOMAIN by unsetting RA.
Add rpz: for-downstream: yesno option, where the RPZ zone is authoritatively answered for, so the RPZ zone contents can be checked with DNS queries directed at the RPZ zone.
Merge PR #616: Update ratelimit logic. It also introduces ratelimit-backoff and ip-ratelimit-backoff configuration options.
Change aggressive-nsec default to yes.

Bug Fixes

Fix compile warning for if_nametoindex on windows 64bit.
Merge PR #581 from fobser: Fix -Wmissing-prototypes and -Wshadow warnings in rpz.
Fix validator debug output about DS support, print correct algorithm.
Add code similar to fix for ldns for tab between strings, for consistency, the test case was not broken.
Allow local-data for classes other than IN to inherit a configured local-zone's type if possible, instead of defaulting to type transparent as per the implicit rule.
Fix to pick up other class local zone information before unlock.
Add missing configure flags for optional features in the documentation.
Fix Unbound capitalization in the documentation.
Fix #591: Unbound-anchor manpage links to non-existent license file.
contrib/aaaa-filter-iterator.patch file renewed diff content to apply cleanly to the current coderepo for the current code version.
Fix to add test for rpz-signal-nxdomain-ra.
Fix #596: only unset RA when NXDOMAIN is signalled.
Fix that RPZ does not set RD flag on replies, it should be copied from the query.
Fix for #596: fix that rpz return message is returned and not just the rcode from the iterator return path. This fixes signal unset RA after a CNAME.
Fix unit tests for rpz now that the AA flag returns successfully from the iterator loop.
Fix for #596: add unit test for nsdname trigger and signal unset RA.
Fix for #596: add unit test for nsip trigger and signal unset RA.
Fix #598: Fix unbound-checkconf fatal error: module conf 'respip dns64 validator iterator' is not known to work.
Fix for #596: Fix rpz-signal-nxdomain-ra to work for clientip triggered operation.
Merge #600 from pemensik: Change file mode before changing file owner.
Fix prematurely terminated TCP queries when a reply has the same ID.
For #602: Allow the module-config "subnetcache validator cachedb iterator".
Fix EDNS to upstream where the same option could be attached more than once.
Add a region to serviced_query for allocations.
For dnstap, do not wakeupnow right there. Instead zero the timer to force the wakeup callback asap.
Fix #610: Undefine-shift in sldns_str2wire_hip_buf.
Fix #588: Unbound 1.13.2 crashes due to p->pc is NULL in serviced_udp_callback.
Merge PR #612: TCP race condition.
Test for NSID in SERVFAIL response due to DNSSEC bogus.
Fix #599: [FR] RFC 9156 (obsoletes RFC 7816), by noting the new RFC document.
Fix tls-* and ssl-* documented alternate syntax to also be available through remote-control and unbound-checkconf.
Better cleanup on failed DoT/DoH listening socket creation.
iana portlist update.
Fix review comment for use-after-free when failing to send UDP out.
Merge PR #603 from fobser: Use OpenSSL 1.1 API to access DSA and RSA internals.
Merge PR #532 from Shchelk: Fix: buffer overflow bug.
Merge PR #617: Update stub/forward-host notation to accept port and tls-auth-name.
Update stream_ssl.tdir test to also use the new forward-host notation.
Fix header comment for doxygen for authextstrtoaddr.
please clang analyzer for loop in test code.
Fix docker splint test to use more portable uname.
Update contrib/aaaa-filter-iterator.patch with diff for current software version.
Fix for #611: Integer overflow in sldns_wire2str_pkt_scan.

Unbound 1.14.0

Download:: unbound-1.14.0.tar.gz | sha1 | sha256 | pgp sig
Date:: 9 December, 2021

Features

Merge #401: RPZ triggers. This add additional RPZ triggers, unbound supports a full set of rpz triggers, and this now includes nsdname, nsip and clientip triggers. Also actions are fully supported, and this now includes the tcp-only action.
Merge #519: Support for selective enabling tcp-upstream for stub/forward zones.
Merge PR #514, from ziollek: Docker environment for run tests.
Support using system-wide crypto policies.
Fix that --with-ssl can use "/usr/include/openssl11" to pass the location of a different openssl version.
Merged #41 from Moritz Schneider: made outbound-msg-retry configurable.
Implement RFC8375: Special-Use Domain 'home.arpa.'.
Merge PR #555 from fobser: Allow interface names as scope-id in IPv6 link-local addresses.

Bug Fixes

Add test tool readzone to .gitignore.
Merge #521: Update mini_event.c.
Merge #523: fix: free() call more than once with the same pointer.
For #519: note stub-tcp-upstream and forward-tcp-upstream in the example configuration file.
For #519: yacc and lex. And fix python bindings, and test program unbound-dnstap-socket.
For #519: fix comments for doxygen.
Fix to print error from unbound-anchor for writing to the key file, also when not verbose.
For #514: generate configure.
Fix for #431: Squelch permission denied errors for udp connect, and udp send, they are visible at higher verbosity settings.
Fix zonemd verification of key that is not in DNS but in the zone and needs a chain of trust.
zonemd, fix order of bogus printout string manipulation.
Fix to support harden-algo-downgrade for ZONEMD dnssec checks.
Merge PR #528 from fobser: Make sldns_str2wire_svcparam_buf() static.
Fix #527: not sending quad9 cert to syslog (and may be more).
Fix sed script in ssldir split handling.
Fix #529: Fix: log_assert does nothing if UNBOUND_DEBUG is undefined.
Fix #531: Fix: passed to proc after free.
Fix #536: error: RPZ: name of record (drop.spamhaus.org.rpz.local.) to insert into RPZ.
Fix the stream wait stream_wait_count_lock and http2 buffer locks setup and desetup from race condition.
Fix RPZ locks. Do not unlock zones lock if requested and rpz find zone does not find the zone. Readlock the clientip that is found for ipbased triggers. Unlock the nsdname zone lock when done. Unlock zone and ip in rpz nsip and nsdname callback. Unlock authzone and localzone if clientip found in rpz worker call.
Fix compile warning in libunbound for listen desetup routine.
Fix asynclook unit test for setup of lockchecks before log.
Fix #533: Negative responses get cached even when setting cache-max-negative-ttl: 1
Fix tcp fastopen failure when disabled, try normal connect instead.
Fix #538: Fix subnetcache statistics.
Small fixes for #41: changelog, conflicts resolved, processQueryResponse takes an iterator env argument like other functions in the iterator, no colon in string for set_option, and some whitespace style, to make it similar to the rest.
Fix for #41: change outbound retry to int to fix signed comparison warnings.
Fix root_anchor test to check with new icannbundle date.
Fix initialisation errors reported by gcc sanitizer.
Fix lock debug code for gcc sanitizer reports.
Fix more initialisation errors reported by gcc sanitizer.
Fix crosscompile on windows to work with openssl 3.0.0 the link with ws2_32 needs -l:libssp.a for __strcpy_chk. Also copy results from lib64 directory if needed.
For crosscompile on windows, detect 64bit stackprotector library.
Fix crosscompile shell syntax.
Fix crosscompile windows to use libssp when it exists.
For the windows compile script disable gost.
Fix that on windows, use BIO_set_callback_ex instead of deprecated BIO_set_callback.
Fix crosscompile script for the shared build flags.
Fix to add example.conf note for outbound-msg-retry.
Fix chaos replies to have truncation for short message lengths, or long reply strings.
Fix to protect custom regional create against small values.
Fix #552: Unbound assumes index.html exists on RPZ host.
Fix that forward-zone name is documented as the full name of the zone. It is not relative but a fully qualified domain name.
Fix analyzer review failure in rpz action override code to not crash on unlocking the local zone lock.
Fix to remove unused code from rpz resolve client and action function.
Merge #565: unbound.service.in: Disable ProtectKernelTunables again.
Fix for #558: fix loop in comm_point->tcp_free when a comm_point is reclaimed more than once during callbacks.
Fix for #558: clear the UB_EV_TIMEOUT bit before adding an event.
Improve EDNS option handling, now also works for synthesised responses such as local-data and server.id CH TXT responses.
Merge PR #570 from rex4539: Fix typos.
Fix for #570: regen aclocal.m4, fix configure.ac for spelling.
Fix to make python module opt_list use opt_list_in.
Fix #574: unbound-checkconf reports fatal error if interface names are used as value for interfaces:
Fix #574: Review fixes for it.
Fix #576: [FR] UB_* error codes in unbound.h
Fix #574: Review fix for spelling.
Fix to remove git tracking and ci information from release tarballs.
iana portlist update.
Merge PR #511 from yan12125: Reduce unnecessary linking.
Merge PR #493 from Jaap: Fix generation of libunbound.pc.
Merge PR #562 from Willem: Reset keepalive per new tcp session.
Merge PR #522 from sibeream: memory management violations fixed.
Merge PR #530 from Shchelk: Fix: dereferencing a null pointer.
Fix #454: listen_dnsport.c:825: error: ‘IPV6_TCLASS’ undeclared.
Fix #574: Review fixes for size allocation.
Fix doc/unbound.doxygen to remove obsolete tag warning.

Unbound 1.13.2

Download:: unbound-1.13.2.tar.gz | sha1 | sha256 | pgp sig
Date:: 12 August, 2021

Features

Merge PR #317: ZONEMD Zone Verification, with RFC 8976 support. ZONEMD records are checked for zones loaded as auth-zone, with DNSSEC if available. There is an added option zonemd-permissive-mode that makes it log but not fail wrong zones. With zonemd-reject-absence for an auth-zone the presence of a zonemd can be mandated for specific zones.
Fix: Resolve interface names on control-interface too.
Merge #470 from edevil: Allow configuration of persistent TCP connections.
Fix #474: always_null and others inside view.
Add that log-servfail prints an IP address and more information about one of the last failures for that query.
Merge #478: Allow configuration of TCP timeout while waiting for response.
Add ./configure --with-deprecate-rsa-1024 that turns off RSA 1024.
Move the NSEC3 max iterations count in line with the 150 value used by BIND, Knot and PowerDNS. This sets the default value for it in the configuration to 150 for all key sizes.
zonemd-check: yesno option, default no, enables the processing of ZONEMD records for that zone.
Merge #486 by fobster: Make VAL_MAX_RESTART_COUNT configurable.
Merge PR #491: Add SVCB and HTTPS types and handling according to draft-ietf-dnsop-svcb-https.
Introduce 'http-user-agent:' and 'hide-http-user-agent:' options.

Bug Fixes

Fix for Python 3.9, no longer use deprecated functions of PyEval_CallObject (now PyObject_Call), PyEval_InitThreads (now none), PyParser_SimpleParseFile (now Py_CompileString).
Merge PR #420 from dyunwei: DOH not responsing with "http2_query_read_done failure" logged.
Fix #422: IPv6 fallback issues when IPv6 is not properly enabled/configured.
Fix to make tests work with support indicators set for iterator.
Fix build on Python 3.10.
Fix doxygen and pydoc warnings.
Fix #429: rpz: url: with https: broken (regression in 1.13.1).
rpz skip nsec3param records, and nicer log for unsupported actions.
Fix #431: Squelch permission denied errors for tcp connect and udp connect from the logs, unless at high verbosity.
Fix for zonemd, that nxdomain for the chain of trust is allowed for island zones, it is treated as an insecure zone for verification.
Fix for zonemd, that domain-insecure zones work without dnssec.
Fix for zonemd, do not reject insecure result from trust anchor validation step in dnssec chain of trust.
On startup of unbound it checks if rlimits on memory size look sufficient for the configured cache size, and logs warning if not.
Fix function documentation.
Fix unit test for added ulimit checks.
spelling fix in header.
Fix #384: (1) A minor request to improve the log (2) A minor bug in one log message.
ipsecmod: Better logging for detecting a cycle when attaching the A/AAAA subquery.
Merge PR #367 : DNSTAP log local address. With code from PR #365 and fixes #368 : dnstap does not log the DNS message ID for FORWARDER_QUERY.
Fix to allow rpz with wildcard that applies to all TLDs at once.
Fix for #367: rc_ports don't have ub_sock; skip cleaning up.
Fix spurious errors about "Could not generate request: out of memory". The mesh detect cycle routine no longer wrongly stops the check when the calling mesh state is unique.
Workaround for #439: prevent loops in the reuse rbtree.
Debug output for #411 and #439: printout internal error and details.
Fix parse of LOC RR type for decimetres.
Fix #441: Minimal NSEC range not accepted for top level domains.
Fix for #447: squelch connection refused tcp connection failures from the log, unless verbosity is high.
Merge #449 from orbea: build: Add missing linker flags.
Comment out nonworking OSX and IOS travis tests, vm fails to start.
Fix compile error in listen_dnsport on Android.
Fix memory leak reported by asan in rpz SOA record query name.
Fix unused-function warning when compiling with --enable-dnscrypt.
Fix for #367: fix memory leak when cannot bind to listening port.
Reformat pythonmod/pythonmod_utils.{c,h}.
Travis enable all tests again. Clang analyzer only a couple times, when there is a difference. homebrew updates disabled, so it does not hang. removed trailing slashes from configure paths. Moved iOS tests to allow-failure.
travis, analyzer disabled on test without debug, that does not run anway. Turn off failing tests except one. Update iOS test to xcode image 12.2.
Fix deprecation test to work for iOS TVOS and WatchOS, it uses CFLAGS and CPPFLAGS and also checks if the item is unavailable.
Travis, fix script to fail when tasks fail.
Travis, fix warning in ubsan compile.
Fix configure Targetconfiditionals.h header check, to use compile.
Fix that cachedb does not produce empty object files when disabled.
Fix #429: Also fix end of transfer for http download of auth zones.
Disable the use of stack-protector for cross compiled 32-bit windows builds; relates to #444.
Fix stack-protector change to not override other CFLAGS options.
Clean makedist.sh.
Merge #460 from orbea: build: Link with the libtool archive.
Fix to stop IPv6 PMTU discovery.
Fix for #411: Depth protect for crash on deleted element timeout.
rebuild configure to set EXTRALINK to libunbound.la for #460.
Fix permission denied sendto log, squelch the log messages unless high verbosity is set.
Fix (increase) verbosity level for iterator error log in processQueryTargets().
Fix that nxdomain synthesis does not happen above the stub or forward definition.
Fix documentation comment for files previously residing in checkconf/.
Remove unused functions worker_handle_reply and libworker_handle_reply.
Merge #466 from FGasper: Support OpenSSLs that lack SSL_get0_alpn_selected.
Fix #468: OpenSSL 1.0.1 can no longer build Unbound.
Further fix for #468: detect SSL_CTX_set_alpn_protos for build with OpenSSL 1.0.1.
Fix that testcode dohclient has OpenSSL initialisation calls.
Fix compiler warning for signed/unsigned comparison for max_reuse_tcp_queries.
Fix #481: Fix comment in configuration file.
Fix to squelch tcp socket bind failures when the interface is gone.
Rerun flex and bison.
Fix for #367: only attempt to get the interface for queries that are no longer on the tcp_waiting_list.
Add more logging for out-of-memory cases.
Fix #485: Unbound occasionally reports broken stats.
Remove case fallthrough from deprecate-rsa-1024 code.
Merge PR #487: ifdef RLIMIT_AS in recently added check.
Fix that auth-zone zonefiles use last TTL if no TTL is specified.
Fix #489: Compile using MSYS2 MinGW 64-bit.
Fix for #411, #439, #469: Reset the DNS message ID when moving queries between TCP streams.
Refactor for uniform way to produce random DNS message IDs.
Test code has -q option for quiet output.
Fix #492: module-config respip missing in unbound.conf.5.in man page. Merges #494 from he32.
For #492: Fix font highlighting for the man page on emacs.
Merge #496 from banburybill: Use build system endianness if available, otherwise try to work it out.
Fix test for zonemd-check option.
Merge #448 from shoeper: Update unbound-control.8.in, fix rpz_disable typo.
Fix #425: Document auth-zone supports communication with DNS primary on nondefault port.
Fix unused variable warning when compiling with --enable-dnstap.
Generated lexer and parser for #486; updated example.conf.
Fix #413 (based on patch by k-ronny): unbound: does not compile on macOS 11.1-x86_64 host.
Use host_os instead of target_os in configure for Darwin8 build.
Fix #500: SPEC file in version 1.13.1 references version 1.4; unable to build RPM from source.
Fix contrib/unbound.spec, fixed url and comment.
Fix configure nonblocking test and onmingw test to use host.
Merge #440 by kimheino: Various fixes to contrib/unbound_munin_ file.
Fix a number of warnings reported by the gcc analyzer.
Fix #495: Documentation or implementation of "verbosity" option.
Fix #503: DNS over HTTPS response truncated.
Fix warnings reported by the gcc analyzer.
Add analyzer and port compile github workflow.
Fix up permissions on rpl data file in tests.
Fix testbound newline treatment in moment_read and tempfile write.
Fix configure grep for reuseport default for failure.
Fix compat ctime_r return value
Fix configure does not require pkg-config if not needed.
Fix unit test in the ctime_r calls for autotrust and in testbound.
Fix auth zone download on windows to unlink before rename.
Fix #506: Python Module Seems to Leak Memory if it Experiences an Unhandled Exception.
Fix Wunused-result compile warnings.
Fix compiler warnings for #491.
Fix clang-analysis warnings for testcode/readzone.c.
Merge #510 from ndptech: Don't call a function which hasn't been defined.
Fix for #510: in depth, use ifdefs for windows api event calls.
Fix spelling in doc/unbound.doxygen comment.
Fix spelling in localzone.h comment.
Fix unbound-control local_data and local_datas to print detailed syntax errors.
review fix to remove duplicate error printout.
Insert header into testcode/readzone.c, it was missing.
Fix from lint for ignored return value.
Fix for older parsers for function call in serve expired get cached.
Fix that ldns_zone_new_frm_fp_l counts the line number for an empty line after a comment.
Merge #512: unbound.service.in: upgrade hardening to latest standards.
Fix readzone unknown type print for memory resize.
Merge #513: Stream reuse, attempt to fix #411, #439, #469. This introduces a couple of fixes for the stream reuse functionality that could result in broken internal structures.
Fix #515: Compilation against openssl 3.0.0 beta2 is failing to build unbound.
For #515: Fix compilation with openssl 3.0.0 beta2, lib64 dir and SSL_get_peer_certificate.
Move acx_nlnetlabs.m4 to version 41, with lib64 openssl dir check.
Prepare for OpenSSL 3.0.0 provider API usage, move the sldns keyraw functions to produce EVP_PKEY results.
Move RSA and DSA to use OpenSSL 3.0.0 API.
Move ECDSA functions to use OpenSSL 3.0.0 API.
iana portlist update.
Fix verbose printout failure in tcp reuse unit test.
Merge PR #517 from dyunwei: #420 breaks the mesh reply list function that need to reuse the dns answer.
Annotate assertion into error printout; we think it may be an error, but the situation looks harmless.
Fix sign comparison warning on FreeBSD.
Listen to read or write events after the SSL handshake. Sticky events on windows would stick on read when write was needed.
Merge PR #415 from sibeream: Use /proc/sys/net/ipv4/ip_local_port_range to determine available outgoing ports. (New --enable-linux-ip-local-port-range configuration option)
Bump MAX_RESTART_COUNT to 11 from 8; in relation to #438. This allows longer CNAME chains in Unbound.
In unit test use openssl set security level to allow keys in test.
Fix static analysis warnings about localzone locks that are unused.
Fix missing locks in zonemd unit test.
Fix readzone compile under debug config.
Fix out of sourcedir run of zonemd unit tests.
Fix libnettle zonemd unit test.
Fix unit test zonemd_reload for use in run_vm.
Fix #520: Unbound 1.13.2rc1 fails to build python module.

Unbound 1.13.1

Download:: unbound-1.13.1.tar.gz | sha1 | sha256 | pgp sig
Date:: 9 February, 2021

Features

Merge PR #375 by fhriley: Add rpz_enable and rpz_disable commands to unbound-control.
Merge PR #391 from fhriley: Add start_time to reply callbacks so modules can compute the response time.
Fix #397: [Feature request] add new type always_null to local-zone similar to always_nxdomain.
Support for RFC5001: DNS Name Server Identifier (NSID) Option with the nsid: option in unbound.conf
Padding of queries and responses with DNS over TLS as specified in RFC7830 and RFC8467.
Merge PR #275 from Roland van Rijswijk-Deij: Add feature to return the original instead of a decrementing TTL ('serve-original-ttl')

Bug Fixes

Fix #358: Squelch udp connect 'no route to host' errors on low verbosity.
Fix #360: for the additionally reported TCP Fast Open makes TCP connections fail, in that case we print a hint that this is happening with the error in the logs.
Fix #356: deadlock when listening tcp.
Fix unbound-dnstap-socket to not use log routine from interrupt handler and not print so frequently when invoked in sequence.
Fix on windows to ignore connection failure on UDP, unless verbose.
make depend.
Fix #371: unbound-control timeout when Unbound is not running.
Fix to squelch permission denied and other errors from remote host, they are logged at higher verbosity but not on low verbosity.
Merge PR #335 from fobser: Sprinkle in some static to prevent missing prototype warnings.
Merge PR #373 from fobser: Warning: arithmetic on a pointer to void is a GNU extension.
Fix missing prototypes in the code.
Fix error cases when udp-connect is set and send() returns an error (modified patch from Xin Li @delphij).
For #376: Fix that comm point event is not double removed or double added to event map.
iana portlist updated.
Fix #385: autoconf 2.70 impacts unbound build
Fix #379: zone loading over HTTP appears to have buffer issues.
Merge PR #395 from mptre: add missing null check.
Fix #387: client-subnet-always-forward seems to effectively bypass any caching?
For #391: use struct timeval* start_time for callback information.
For #391: fix indentation.
For #391: more double casts in python start time calculation.
Add comment documentation.
Fix clang analysis warning.
Fix so local zone types always_nodata and always_deny can be used from the config file.
Merge #399 from xiangbao227: The lock of lruhash table should unlocked after markdel entry.
Fix for #93: dynlibmodule link fix for Windows.
Fix for #93: dynlibmodule import library is named libunbound.dll.a.
Merge #402 from fobser: Implement IPv4-Embedded addresses according to RFC6052.
Fix #404: DNS query with small edns bufsize fail.
Fix declaration before statement and signed comparison warning in dns64.
Fix TTL of SOA record for negative answers (localzone and authzone data) to be the minimum of the SOA TTL and the SOA.MINIMUM.
Fix compile of unbound-dnstap-socket without dnstap installed.
Merge PR #355 from noloader: Make ICANN Update CA and DS Trust Anchor static data.
Ignore cache blacklisting when trying to reply with expired data from cache (#394).
Merge PR #408 from fobser: Prevent a few more yacc clashes.
Annotate that we ignore the return value of if_indextoname.
Fix to use correct type for label count in rpz routine.
Fix empty clause warning in config_file nsid parse.
Fix to use correct type for label count in ipdnametoaddr rpz routine.
Fix empty clause warning in edns pass for padding.
Fix for doxygen 1.8.20 compatibility.
Attempt to fix NULL keys in the reuse_tcp tree; relates to #411.
Fix dynlibmod link on rhel8 for -ldl inclusion.
Fix windows dependency on libssp.dll because of default stack protector in mingw.
Fix indentation of root anchor for use by windows install script.

Unbound 1.13.0

Download:: unbound-1.13.0.tar.gz | sha1 | sha256 | pgp sig
Date:: 3 December, 2020

Features

Pass the comm_reply information to the inplace_cb_reply* functions during the mesh state and update the documentation on that.
Fix #330: [Feature request] Add unencrypted DNS over HTTPS support. This adds the option http-notls-downstream: yesno to change that, and the dohclient test code has the -n option.
Merge PR #228 : infra-keep-probing option to probe hosts that are down. Add infra-keep-probing: yes option. Hosts that are down are probed more frequently. With the option turned on, it probes about every 120 seconds, eventually after exponential backoff, and that keeps that way. If traffic keeps up for the domain. It probes with one at a time, eg. one query is allowed to probe, other queries within that 120 second interval are turned away.
Merge PR #313 from Ralph Dolmans: Replace edns-client-tag with edns-client-string option.
Merge PR #283 : Stream reuse. This implements upstream stream reuse for performing several queries over the same TCP or TLS channel.
Fix to connect() to UDP destinations, default turned on, this lowers vulnerability to ICMP side channels. Option to toggle udp-connect, default is enabled.

Bug Fixes

Fix #319: potential memory leak on config failure, in rpz config.
Fix dnstap socket and the chroot not applied properly to the dnstap socket path.
Fix warning in libnss compile, nss_buf2dsa is not used without DSA.
Fix #323: unbound testsuite fails on mock build in systemd-nspawn if systemd support is build.
Fix for python reply callback to see mesh state reply_list member, it only removes it briefly for the commpoint call so that it does not drop it and attempt to modify the reply list during reply.
Fix that if there are on reply callbacks, those are called per reply and a new message created if that was modified by the call.
Free up auth zone parse region after use for lookup of host
Merge PR #326 from netblue30: DoH: implement content-length header field.
DoH content length, simplify code, remove declaration after statement and fix cast warning.
Fix that if there are reply callbacks for the given rcode, those are called per reply and a new message created if that was modified by the call.
Fix that the out of order TCP processing does not limit the number of outstanding queries over a connection.
Fix python documentation warning on functions.rst inplace_cb_reply.
Log ip address when http session recv fails, eg. due to tls fail.
Fix to set the tcp handler event toggle flag back to default when the handler structure is reused.
Clean the fix for out of order TCP processing limits on number of queries. It was tested to work.
Fix that http settings have colon in set_option, for http-endpoint, http-max-streams, http-query-buffer-size, http-response-buffer-size, and http-nodelay.
Fix memory leak of https port string when reading config.
local-zone regional allocations outside of chunk
Merge PR #324 from James Renken: Add modern X.509v3 extensions to unbound-control TLS certificates.
Fix for PR #324 to attach the x509v3 extensions to the client certificate.
Fix #327: net/if.h check fails on some darwin versions; contribution by Joshua Root.
Fix #320: potential memory corruption due to size miscomputation upton custom region alloc init.
Fix #333: Unbound Segmentation Fault w/ log_info Functions From Python Mod.
Fix that minimal-responses does not remove addresses from a priming query response.
In man page note that tls-cert-bundle is read before permission drop and chroot.
Fix #341: fixing a possible memory leak.
Fix memory leak after fix for possible memory leak failure.
Fix #343: Fail to build --with-libnghttp2 with error: 'SSIZE_MAX' undeclared.
Fix for #303 CVE-2020-28935 : Fix that symlink does not interfere with chown of pidfile.
Fix #347: IP_DONTFRAG broken on Apple xcode 12.2.
Fix #350: with the AF_NETLINK permission, to fix 1.12.0 error: failed to list interfaces: getifaddrs: Address family not supported by protocol.
Merge #351 from dvzrv: Add AF_NETLINK to set of allowed socket address families.
iana portlist updated.
Fix crash when TLS connection is closed prematurely, when reuse tree comparison is not properly identical to insertion.
Fix padding of struct regional for 32bit systems.
with udp-connect ignore connection refused with UDP timeouts.
Fix udp-connect on FreeBSD, do send calls on connected UDP socket.
Better fix for reuse tree comparison for is-tls sockets. Where the tree key identity is preserved after cleanup of the TLS state.
Fix memory leak for edns client tag opcode config element.
Attempt fix for libevent state in tcp reuse cases after a packet is written.
Fix readagain and writeagain callback functions for comm point cleanup.
Fix to omit UDP receive errors from log, if verbosity low. These happen because of udp-connect.
For #352: contrib/metrics.awk for Prometheus style metrics output.
Fix that after failed read, the readagain cannot activate.
Clear readagain upon decommission of pending tcp structure.
Fix compile warning for type cast in http2_submit_dns_response.
Fix when use free buffer to initialize rbtree for stream reuse.
Fix compile warnings for windows.
Fix compile warnings in rpz initialization.
Fix contrib/metrics.awk for FreeBSD awk compatibility.
Fix assertion failure on double callback when iterator loses interest in query at head of line that then has the tcp stream not kept for reuse.
Fix stream reuse and tcp fast open.

Unbound 1.12.0

Download:: unbound-1.12.0.tar.gz | sha1 | sha256 | pgp sig
Date:: 8 October, 2020

Features

DNS Flag Day 2020: change edns-buffer-size default to 1232.
Merge PR #255: DNS-over-HTTPS support.
Use inclusive language in configuration
Merge PR #284 and Fix #246: Remove DLV entirely from Unbound. The DLV has been decommisioned and in unbound 1.5.4, in 2015, there was advise to stop using it. The current code base does not contain DLV code any more. The use of dlv options displays a warning.
Similar to NSD PR#113, implement that interface names can be used, eg. something like interface: eth0 is resolved at server start and uses the IP addresses for that named interface.
Merge PR #272: Add EDNS client tag functionality.
Add edns-client-tag-opcode option

Bug Fixes

Merge PR #270 from cgzones: munin plugin: always exit 0 in autoconf
Merge PR #269, Fix python module len() implementations, by Torbjörn Lönnemark
Merge PR #268, draft-ietf-dnsop-serve-stale-10 has become RFC 8767 on March 2020, by and0x000.
Fix doxygen comment for no ssl for tls session ticket key callback routine.
Fix mini_event.h on OpenBSD cannot find fd_set.
Improve error log message when inserting rpz RR.
Merge PR #280, Make tvOS & watchOS checks verify truthiness as well as definedness, by Felipe Gasper.
contrib/aaaa-filter-iterator.patch file renewed diff content to apply cleanly to the current coderepo for the current code version.
Fix #287: doc typo: "Additionaly".
Merge (modified) PR #277, use EVP_MAC_CTX_set_params if available, by Vítězslav Čížek.
Create and init edns tags data for libunbound.
Fix stats double count issue (#289).
Fix that dnstap reconnects do not spam the log with the repeated attempts. Attempts on the timer are only logged on high verbosity, if they produce a connection failure error.
Fix to apply chroot to dnstap-socket-path, if chroot is enabled.
Change configure to use EVP_sha256 instead of HMAC_Update for openssl-3.0.0.
Update documentation in python example code.
Review fix interface, doxygen and assign null in case of error free.
Merge PR #293: Add missing prototype. Also refactor to use the new shorthand function to clean up the code.
Refactor to use sock_strerr shorthand function.
Fix #296: systemd nss-lookup.target is reached before unbound can successfully answer queries. Changed contrib/unbound.service.in.
Fix num.expired statistics output.
Remove x file mode on ipset/ipset.c and h files.
Spelling fix.
Introduce test for statistics.
Fix that prefer-ip4 and prefer-ip6 can be get and set with unbound-control, with libunbound and the unbound-checkconf option output function.
Merge PR #311 by luismerino: Dynlibmod leak.
Error message is logged for dynlibmod malloc failures.
iana portlist updated.
Fix #304: dnstap logging not recovering after dnstap process restarts
Fix edns-client-tags get_option typo
Fix #305: dnstap logging significantly affects unbound performance (regression in 1.11).
Fix #305: only wake up thread when threshold reached.
Fix to ifdef fptr wlist item for dnstap.
Fix memory leak of edns tags at libunbound context delete.
Fix double loopexit for unbound-dnstap-socket after sigterm.

Unbound 1.11.0

Download:: unbound-1.11.0.tar.gz | sha1 | sha256 | pgp sig
Date:: 27 July, 2020

Features

Merge #225 from akhait: KSK-2010 has been revoked. It removes the KSK-2010 from the default list in unbound-anchor, now that the revocation period is over. KSK-2017 is the only trust anchor in the shipped default now.
Merge PR #93: Add dynamic library support.
Introduce 'include-toplevel:' configuration option.
Change default value for 'rrset-roundrobin' to yes.
Add SNI support on more TLS connections (fixes #193).
Add SNI support to unbound-anchor.
Merge PR #164: Framestreams, this branch implements dnstap connectivity in unbound. This has a number of new features. The dependency on libfstrm is removed. The fstrm protocol code resides in dnstap/dnstap_fstrm.h and dnstap/dnstap_fstrm.c. This contains a brief definition of what unbound needs. The make unbound-dnstap-socket builds a debug tool, unbound-dnstap-socket. It can listen, accept multiple DNSTAP streams and print information. Commandline options control it. Unbound can reconnect if the unix domain socket file socket is closed. This uses exponential backoff after which it uses a one second timer to throttle cpu down. There is also support to use TCP and TLS for connecting to the log server. There are new config options to turn them on, in the dnstap section in the man page and example config file. dnstap-ip with IP address of server for TCP or TLS use. dnstap-tls to turn on TLS. And dnstap-tls-server-name, dnstap-tls-cert-bundle, dnstap-tls-client-key-file and dnstap-tls-client-cert-file to configure the certificates for server authentication and client authentication, or leave at "" to not use that.
Fix #165: Add prefer-ip4: yesno config option to prefer ipv4 for using ipv4 filters, because the hosts ip6 netblock /64 is not owned by one operator, and thus reputation is shared.

Bug Fixes

protect X509_CHECK_FLAG_NO_PARTIAL_WILDCARDS with ifdef for different openssl versions.
Merge PR #166: Fix typo in unbound.service.in, by glitsj16.
Fix #169: Fix warning for daemon/remote.c output may be truncated from snprintf.
Fix #170: Fix gcc undefined sanitizer signed integer overflow warning in signature expiry RFC1982 serial number arithmetic.
Fix more undefined sanitizer issues, in respip copy_rrset null dname, and in the client_info_compare routine for null memcmp.
Merge PR #171: Add additional compilers and platforms to Travis testing, by noloader.
Merge PR #173: updated makedist.sh for config.guess and config.sub and sha256 digest for gpg, by noloader.
Merge PR #172: Add IBM s390x arch for testing, by noloader.
Fix #177: dnstap does not build on macOS.
Fix compiler warning in dns64/dns64.c
Merge PR #174: Add Android to Travis testing, by noloader.
Move android build scripts to contrib/ and allow android tests to fail.
Fix #175, Merge PR #176: fix link error when OpenSSL is configured with no-engine, thanks noloader.
Upgrade config.guess(2020-01-01) and config.sub(2020-01-01).
Merge PR #180 from noloader: Avoid calling exit in Travis script.
Merge PR #181 from noloader: Fix OpenSSL -pie warning on Android.
Update README-Travis.md (from PR #179), by Jeffrey Walton.
Fix PR #182 from noloader: Add iOS testing to Travis.
Merge PR #186, fix #183: Fix unrecognized 'echo -n' option on OS X, by noloader
Fix #188: unbound-control.c:882:6: error: 'execlp' is unavailable: not available on tvOS.
Fix #189: mini_event.h:142:17: error: field 'ev_timeout' has incomplete type, by noloader.
Add check to make sure RPZ records are subdomains of configured zone origin.
Fix #192: In the unbound-checkconf tool, the module config of dns64 subnetcache respip validator iterator is whitelisted, it was reported it seems to work.
Merge PR #191: Update iOS testing on Travis, by Jeffrey Walton.
Fix #158: open tls-session-ticket-keys as binary, for Windows. By Daisuke HIGASHI.
Merge PR#134, Allow the kernel to provide random source ports. By Florian Obser.
Log warning when using outgoing-port-permit and outgoing-port-avoid while explicit port randomisation is disabled.
Merge PR #194: Add libevent testing to Travis, by Jeffrey Walton.
Fix .travis.yml error, missing 'env' option.
Merge PR #197 from fobser: Make log_ident_revert_to_default() a proper prototype.
Merge PR #198 from fobser: Declare lz_enter_rr_into_zone() static, it's only used in this file.
Fix compile on Solaris for unbound-checkconf.
Fix compile of test tools without protobuf.
Merge PR #200 from yarikk: add ip-dscp option to specify the DSCP tag for outgoing packets.
Travis fix for ios by omitting tools from install.
Merge PR #201 from noloader: Fix OpenSSL cross-compaile warnings.
Fix RPZ concurrency issue when using auth_zone_reload.
Make unbound-control error returned on missing domain name more user friendly.
Merge PR #203 from noloader: Update README-Travis.md with current procedures.
Merge PR #207: Clarify if-automatic listens on 0.0.0.0 and ::
Merge PR #208: Fix uncached CLIENT_RESPONSE'es on stateful transports.
Merge PR #206: Redis TTL, by Talkabout.
More documentation for redis-expire-records option.
Keep track of number of timeouts. Use this counter to determine if capsforid fallback should be started.
Merge PR #214 from gearnode: unbound-control-setup recreate certificates. With the -r option the certificates are created again, without it, only the files that do not exist are created.
Fix #220: auth-zone section in config may lead to segfault.
Fix help return code in unbound-control-setup script.
Fix for posix shell syntax for trap in nsd-control-setup.
Fix for posix shell syntax for trap in run_msg.sh test script.
Add doxygen documentation for DSCP.
Fix #222: --enable-rpath, fails to rpath python lib.
Fix for count of reply states in the mesh.
Remove unneeded was_mesh_reply check.
Explicitly use 'rrset-roundrobin: no' for test cases.
Cache ECS answers with longest scope of CNAME chain.
windows compile warnings removal for ip dscp option code.
Fix for integer overflow when printing RDF_TYPE_TIME.
Update contrib/aaaa-filter-iterator.patch for the recent generate_sub_request() change and to apply cleanly.
Merge PR #241 by Robert Edmonds: contrib/libunbound.pc.in: Do not use "Requires:".
Mention tls name possible when tls is enabled for stub-addr in the man page.
Fix default explanation in man page for qname-minimisation-strict.
Fix display of event loop method with libev.
iana portlist updated.
Move reply list clean for serve expired mesh callback to after the reply is sent, so that script callbacks have reply_info.
Also move reply list clean for mesh callbacks to the scrip callback can see the reply_info.
Fix for mesh accounting if the reply list already empty to begin with.
Fix for mesh accounting when rpz decides to drop a reply with a tcp stream waiting for it.
Review fix for number of detached states due to use of variable after end of loop.
Fix tcp req info drop due to size call into mesh accounting removal of mesh state during mesh send reply.
Fix #259: Fix unbound-checkconf does not check view existence. unbound-checkconf checks access-control-view, access-control-tags, access-control-tag-actions and access-control-tag-datas.
Fix offset of error printout for access-control-tag-datas.
Fix add missing DSA header, for compilation without deprecated OpenSSL APIs.
Fix to use SSL_CTX_set_tlsext_ticket_key_evp_cb in OpenSSL 3.0.0-alpha4.
Longer keys for the test set, this avoids weak crypto errors.
Add bidirectional frame streams support.
Fix check conf test for referencing installation paths.
Fix unused variable warning for clang analyzer.
Merge PR #234 - Ensure proper alignment of cmsg buffers by Jérémie Courrèges-Anglas.
Fix PR #234 log_assert sizeof to use union buffer.
Fix libnettle compile for session ticket key callback function changes.
Fix lock dependency cycle in rpz zone config setup.
Fix streamtcp to print packet data to stdout. This makes the stdout and stderr not mix together lines, when parsing its output.
Fix contrib/fastrpz.patch to apply cleanly. It fixes for changes due to added libdynmod, but it does not compile, it conflicts with new rpz code.

Unbound 1.10.1

Download:: unbound-1.10.1.tar.gz | sha1 | sha256 | pgp sig
Date:: 19 May, 2020

Bug Fixes

CVE-2020-12662 Unbound can be tricked into amplifying an incoming query into a large number of queries directed to a target.
CVE-2020-12663 Malformed answers from upstream name servers can be used to make Unbound unresponsive.

Unbound 1.10.0

Download:: unbound-1.10.0.tar.gz | sha1 | sha256 | pgp sig
Date:: 20 February, 2020

Features

Merge RPZ support into master. Only QNAME and Response IP triggers are supported.
Added serve-stale functionality as described in draft-ietf-dnsop-serve-stale-10. `serve-expired-*` options can be used to configure the behavior.
Updated cachedb to honor `serve-expired-ttl`; Fixes #107.
Renamed statistic `num.zero_ttl` to `num.expired` as expired replies come with a configurable TTL value (`serve-expired-reply-ttl`).
Merge #135 from Florian Obser: Use passed in neg and key cache if non-NULL.
Fix #153: Disable validation for DSA algorithms. RFC 8624 compliance.
Merge PR #151: Fixes for systemd units, by Maryse47, Edmonds and Frzk. Updates the unbound.service systemd file and adds a portable systemd service file.
Merge PR #154; Allow use of libbsd functions with configure option --with-libbsd. By Robert Edmonds and Steven Chamberlain.
Merge PR #148; Add some TLS stats to unbound_munin_. By Fredrik Pettai.
Merge PR #156 from Alexander Berkes; Added unbound-control view_local_datas_remove command.

Bug Fixes

Fix typo to let serve-expired-ttl work with ub_ctx_set_option(), by Florian Obser
Update mailing list URL.
Fix #140: Document slave not downloading new zonefile upon update.
Downgrade compat/getentropy_solaris.c to version 1.4 from OpenBSD. The dl_iterate_phdr() function introduced in newer versions raises compilation errors on solaris 10.
Changes to compat/getentropy_solaris.c for, ifdef stdint.h inclusion for older systems. ifdef sha2.h inclusion for older systems.
Fix 'make test' to work for --disable-sha1 configure option.
Fix out-of-bounds null-byte write in sldns_bget_token_par while parsing type WKS, reported by Luis Merino from X41 D-Sec.
Updated sldns_bget_token_par fix for also space for the zero delimiter after the character. And update for more spare space.
Fix #138: stop binding pidfile inside chroot dir in systemd service file.
Fix the relationship between serve-expired and prefetch options, patch from Saksham Manchanda from Secure64.
Fix unreachable code in ssl set options code.
Removed the dnscrypt_queries and dnscrypt_queries_chacha tests, because dnscrypt-proxy (2.0.36) does not support the test setup any more, and also the config file format does not seem to have the appropriate keys to recreate that setup.
Fix crash after reload where a stats lookup could reference old key cache and neg cache structures.
Fix for memory leak when edns subnet config options are read when compiled without edns subnet support.
Fix auth zone support for NSEC3 records without salt.
Merge PR #150 from Frzk: Systemd unit without chroot. It add contrib/unbound_nochroot.service.in, a systemd file for use with chroot: "", see comments in the file, it uses systemd protections instead. It was superceded by #151, the unbound_portable.service file.
Merge PR #155 from Robert Edmonds: contrib/libunbound.pc.in: Fixes to Libs/Requires for crypto library dependencies.
iana portlist updated.
Fix to silence the tls handshake errors for broken pipe and reset by peer, unless verbosity is set to 2 or higher.
Merge PR #147; change rfc reference for reserved top level dns names.
Fix #157: undefined reference to `htobe64'.
Fix subnet tests for disabled DSA algorithm by default.
Update contrib/fastrpz.patch for clean diff with current code.
updated .gitignore for added contrib file.
Add build rule for ipset to Makefile
Add getentropy_freebsd.o to Makefile dependencies.
Fix memory leak in error condition remote.c
Fix double free in error condition view.c
Fix memory leak in do_auth_zone_transfer on success
Stop working on socket when socket() call returns an error.
Check malloc return values in TLS session ticket code
Fix fclose on error in TLS session ticket code.
Add assertion to please static analyzer
Fixed stats when replying with cached, cname-aliased records.
Added missing default values for redis cachedb backend.
Fix num_reply_addr counting in mesh and tcp drop due to size after serve_stale commit.
Fix to create and destroy rpz_lock in auth_zones structure.
Fix to lock zone before adding rpz qname trigger.
Fix to lock and release once in mesh_serve_expired_lookup.
Fix to put braces around empty if body when threading is disabled.
Fix num_reply_states and num_detached_states counting with serve_expired_callback.
Cleaner code in mesh_serve_expired_lookup.
Document in unbound.conf manpage that configuration clauses can be repeated in the configuration file.
Document 'ub_result.was_ratelimited' in libunbound.
Fix use after free on log-identity after a reload; Fixes #163.
Fix with libnettle make test with dsa disabled.
Fix contrib/fastrpz.patch to apply cleanly. Fix for serve-stale fixes, but it does not compile, conflicts with new rpz code.
Fix to clean memory leak of respip_addr.lock when ip_tree deleted.
Fix compile warning when threads disabled.
Fix spelling in unbound.conf.5.in.
Stop unbound-checkconf from insisting that auth-zone and rpz zonefiles have to exist. They can not exist, and download later.
contrib/drop2rpz: perl script that converts the Spamhaus DROP-List in RPZ-Format, contributed by Andreas Schulze.
Remove unused variable.
Add respip to supported module-config options in unbound-checkconf.
Updated contrib/unbound_smf23.tar.gz with Solaris SMF service for Unbound from Yuri Voinov.

Unbound 1.9.6

Download:: unbound-1.9.6.tar.gz | sha1 | sha256 | pgp sig
Date:: 12 December, 2019

Features

The unbound.conf includes are sorted ascending, for include statements with a '*' from glob.
drop-tld.diff in contrib/ : adds option drop-tld: yesno that drops 2 label queries, to stop random floods. Apply with patch -p1 < contrib/drop-tld.diff and compile. From Saksham Manchanda (Secure64). Please note that we think this will drop DNSKEY and DS lookups for tlds and hence break DNSSEC lookups for downstream clients.
Add new configure option `--enable-fully-static` to enable full static build if requested; in relation to #91.
Add make distclean that removes everything configure produced, and make maintainer-clean that removes bison and flex output.
unbound-fuzzers.tar.bz2 in contrib/ : three programs for fuzzing, that are 1:1 replacements for unbound-fuzzme.c that gets created after applying the contrib/unbound-fuzzme.patch. They are contributed by Eric Sesterhenn from X41 D-Sec.

Bug Fixes

Fix that pkg-config is setup before --enable-systemd needs it.
Fix contrib/fastrpz.patch asprintf return value checks.
ipset module #28: log that an address is added, when verbosity high.
ipset: refactor long routine into three smaller ones.
updated Makefile dependencies.
squelch DNS over TLS errors 'ssl handshake failed crypto error' on low verbosity, they show on verbosity 3 (query details), because there is a high volume and the operator cannot do anything for the remote failure. Specifically filters the high volume errors.
Fix #71: fix openssl error squelch commit compilation error.
Fix #72: configure --with-syslog-facility=LOCAL0-7 with default LOG_DAEMON (as before) can set the syslog facility that the server uses to log messages.
Use explicit bzero for wiping clear buffer of hash in cachedb, reported by Eric Sesterhenn from X41 D-Sec.
Fix #78: Memory leak in outside_network.c.
Merge pull request #76 from Maryse47: Improvements and fixes for systemd unbound.service.
oss-fuzz badge on README.md.
Fix fix for #78 to also free service callback struct.
Fix for oss-fuzz build warning.
Fix wrong response ttl for prepended short CNAME ttls, this would create a wrong zero_ttl response count with serve-expired enabled.
Merge #80 from stasic: Improve wording in man page.
Merge #82 from hardfalcon: Downgrade CAP_NET_ADMIN to CAP_NET_RAW in unbound.service.
Merge #81 from Maryse47: Consistently use /dev/urandom instead of /dev/random in scripts and docs.
Merge #83 from Maryse47: contrib/unbound.service.in: do not fork into the background.
Merge #85 for issue 84 from sam-lunt: Add kill capability to systemd service file to fix that systemctl reload fails.
Merge #87 from hardfalcon: Fix contrib/unbound.service.in, Drop CAP_KILL, use + prefix for ExecReload= instead.
Merge #90 from vcunat: fix build with nettle-3.5.
Fix for CVE-2019-16866. That fix is also in 1.9.4.
Merge #86 from psquarejho: Added -b source address option to smallapp/unbound-anchor.c, from Lukas Wunner.
Add doxygen comments to unbound-anchor source address code, in #86.
Merge #97: manpage: Add missing word on unbound.conf, from Erethon.
Fix #99: Memory leak in ub_ctx (event_base will never be freed).
Fix #109: check number of arguments for stdin-pipes in unbound-control and fail if too many arguments.
Merge #102 from jrtc27: Add getentropy emulation for FreeBSD.
iana portlist updated.
contrib/fastrpz.patch updated to apply for current code.
fixes for splint cleanliness, long vs int in SSL set_mode.
In unbound-host use separate variable for get_option to please code checkers.
update to bison output of 3.4.1 in code repository.
Provide a prototype for compat malloc to remove compile warning.
Portable grep usage for reuseport configure test.
Check return type of HMAC_Init_ex for openssl 0.9.8.
gitignore .source tempfile used for compatible make.
Fix for CVE-2019-18934, shell execution in ipsecmod. This fix is also in 1.9.5.
Fix authzone printout buffer length check.
Fixes to please lint checks.
Fix Integer Overflow in Regional Allocator, reported by X41 D-Sec.
Fix Unchecked NULL Pointer in dns64_inform_super() and ipsecmod_new(), reported by X41 D-Sec.
Fix Out-of-bounds Read in rr_comment_dnskey(), reported by X41 D-Sec.
Fix Integer Overflows in Size Calculations, reported by X41 D-Sec.
Fix Integer Overflow to Buffer Overflow in sldns_str2wire_dname_buf_origin(), reported by X41 D-Sec.
Fix Out of Bounds Read in sldns_str2wire_dname(), reported by X41 D-Sec.
Fix Out of Bounds Write in sldns_bget_token_par(), reported by X41 D-Sec.
Fix Out of Bounds Read in rrinternal_get_owner(), reported by X41 D-Sec.
Fix Race Condition in autr_tp_create(), reported by X41 D-Sec.
Fix Shared Memory World Writeable, reported by X41 D-Sec.
Adjust unbound-control to make stats_shm a read only operation.
Fix Weak Entropy Used For Nettle, reported by X41 D-Sec.
Fix Randomness Error not Handled Properly, reported by X41 D-Sec.
Fix Out-of-Bounds Read in dname_valid(), reported by X41 D-Sec.
Fix Config Injection in create_unbound_ad_servers.sh, reported by X41 D-Sec.
Fix Local Memory Leak in cachedb_init(), reported by X41 D-Sec.
Fix Integer Underflow in Regional Allocator, reported by X41 D-Sec.
Upgrade compat/getentropy_linux.c to version 1.46 from OpenBSD.
Synchronize compat/getentropy_win.c with version 1.5 from OpenBSD, no changes but makes the file, comments, identical.
Upgrade compat/getentropy_solaris.c to version 1.13 from OpenBSD.
Upgrade compat/getentropy_osx.c to version 1.12 from OpenBSD.
Changes to compat/getentropy files for, no link to openssl if using nettle, and hence config.h for HAVE_NETTLE variable. compat definition of MAP_ANON, for older systems. ifdef stdint.h inclusion for older systems. ifdef sha2.h inclusion for older systems.
Fixed Compat Code Diverging from Upstream, reported by X41 D-Sec.
Fix compile with --enable-alloc-checks, reported by X41 D-Sec.
Fix Terminating Quotes not Written, reported by X41 D-Sec.
Fix Useless memset() in validator, reported by X41 D-Sec.
Fix Unrequired Checks, reported by X41 D-Sec.
Fix Enum Name not Used, reported by X41 D-Sec.
Fix NULL Pointer Dereference via Control Port, reported by X41 D-Sec.
Fix Bad Randomness in Seed, reported by X41 D-Sec.
Fix python examples/calc.py for eval, reported by X41 D-Sec.
Fix comments for doxygen in dns64.
Fix dname loop maximum, reported by Eric Sesterhenn from X41 D-Sec.
Fix compiler warnings.
Merge pull request #122 from he32: In tcp_callback_writer(), don't disable time-out when changing to read.
Merge pull request #124 from rmetrich: Changed log lock from 'quick' to 'basic' because this is an I/O lock.
Fix text around serial arithmatic used for RRSIG times to refer to correct RFC number.
Fix Assert Causing DoS in synth_cname(), reported by X41 D-Sec.
Fix similar code in auth_zone synth cname to add the extra checks.
Fix Assert Causing DoS in dname_pkt_copy(), reported by X41 D-Sec.
Fix OOB Read in sldns_wire2str_dname_scan(), reported by X41 D-Sec.
Fix Out of Bounds Write in sldns_str2wire_str_buf(), reported by X41 D-Sec.
Fix Out of Bounds Write in sldns_b64_pton(), fixed by check in sldns_str2wire_int16_data_buf(), reported by X41 D-Sec.
Fix Insufficient Handling of Compressed Names in dname_pkt_copy(), reported by X41 D-Sec.
Fix Out of Bound Write Compressed Names in rdata_copy(), reported by X41 D-Sec.
Fix Hang in sldns_wire2str_pkt_scan(), reported by X41 D-Sec. This further lowers the max to 256.
Fix snprintf() supports the n-specifier, reported by X41 D-Sec.
Fix Bad Indentation, in dnscrypt.c, reported by X41 D-Sec.
Fix Client NONCE Generation used for Server NONCE, reported by X41 D-Sec.
Fix compile error in dnscrypt.
Fix _vfixed not Used, removed from sbuffer code, reported by X41 D-Sec.
Fix Hardcoded Constant, reported by X41 D-Sec.
make depend
Fix lock type for memory purify log lock deletion.
Fix testbound for alloccheck runs, memory purify and lock checks.
update contrib/fastrpz.patch to apply more cleanly.
Fix Make Test Fails when Configured With --enable-alloc-nonregional, reported by X41 D-Sec.
Fix ipsecmod compile
Fix Makefile.in for ipset module compile, from Adi Prasaja.

Unbound 1.9.5

Download:: unbound-1.9.5.tar.gz | sha1 | sha256 | pgp sig
Date:: 19 November, 2019

Bug Fixes

Fix for vulnerability CVE-2019-18934.

Unbound 1.9.4

Download:: unbound-1.9.4.tar.gz | sha1 | sha256 | pgp sig
Date:: 3 October, 2019

Bug Fixes

Fix for vulnerability CVE-2019-16866.

Unbound 1.9.3

Download:: unbound-1.9.3.tar.gz | sha1 | sha256 | pgp sig
Date:: 27 August, 2019

Features

PR #28: IPSet module, by Kevin Chou. Created a module to support the ipset that could add the domain's ip to a list easily. Needs libmnl, and --enable-ipset and config it, doc/README.ipset.md.
Merge PR #6: Python module: support multiple instances
Merge PR #5: Python module: define constant MODULE_RESTART_NEXT
Merge PR #4: Python module: assign something useful to the per-query data store 'qdata'
Introduce `-V` option to print the version number and build options. Previously reported build options like linked libs and linked modules are now moved from `-h` to `-V` as well for consistency.
PACKAGE_BUGREPORT now also includes link to GitHub issues.

Bug Fixes

Fix #39: In libunbound, leftover logfile is close()d unpredictably.
Fix for #24: Fix abort due to scan of auth zone masters using old address from previous scan.
Fix to omit RRSIGs from addition to the ipset.
Fix to make unbound-control with ipset, remove unused variable, use unsigned type because of comparison, and assign null instead of compare with it. Remade lex and yacc output.
make depend
Added documentation to the ipset files (for doxygen output).
Fix python dict reference and double free in config.
Fix memleak in unit test, reported from the clang 8.0 static analyzer.
For #45, check that 127.0.0.1 and ::1 are not used in unbound.conf when do-not-query-localhost is turned on, or at default on, unbound-checkconf prints a warning if it is found in forward-addr or stub-addr statements.
Fix for possible assertion failure when answering respip CNAME from cache.
Fix in respip addrtree selection. Absence of addr_tree_init_parents() call made it impossible to go up the tree when the matching netmask is too specific.
Fix #48: Unbound returns additional records on NODATA response, if minimal-responses is enabled, also the additional for negative responses is removed.
Fix #49: Set no renegotiation on the SSL context to stop client session renegotiation.
Fix question section mismatch in local zone redirect.
Add verbose log message when auth zone file is written, at level 4.
Add hex print of trust anchor pointer to trust anchor file temp name to make it unique, for libunbound created multiple contexts.
For #52 #53, second context does not close logfile override.
Fix #52 #53, fix for example fail program.
Fix to return after failed auth zone http chunk write.
Fix to remove unused test for task_probe existance.
Fix to timeval_add for remaining second in microseconds.
Check repinfo in worker_handle_request, if null, drop it.
Generate configlexer with newer flex.
Fix warning for unused variable for compilation without systemd.
Fix #59, when compiled with systemd support check that we can properly communicate with systemd through the `NOTIFY_SOCKET`.
iana portlist updated.
Fix autotrust temp file uniqueness windows compile.
avoid warning about upcast on 32bit systems for autotrust.
escape commandline contents for -V.
Fix character buffer size in ub_ctx_hosts.
Option -V prints if TCP fastopen is available.
Fix unittest valgrind false positive uninitialised value report, where if gcc 9.1.1 uses -O2 (but not -O1) then valgrind 3.15.0 issues an uninitialised value for the token buffer at the str2wire.c rrinternal_get_owner() strcmp with the '@' value. Rewritten to use straight character comparisons removes the false positive. Also valgrinds --expensive-definedness-checks=yes can stop this false positive.
Please doxygen's parser for "@" occurrence in doxygen comment.
Fixup contrib/fastrpz.patch
Remove warning about unknown cast-function-type warning pragma.
Document limitation of pidfile removal outside of chroot directory.
Fix log_dns_msg to log irrespective of minimal responses config.
Fix that pkg-config is setup before --enable-systemd needs it.

Unbound 1.9.2

Download:: unbound-1.9.2.tar.gz | sha1 | sha256 | pgp sig
Date:: 17 June, 2019

Features

add type CAA to libpyunbound (accessing libunbound from python).
Fix #17: Add python module example from Jan Janak, that is a plugin for the Unbound DNS resolver to resolve DNS records in multicast DNS [RFC 6762] via Avahi. The plugin communicates with Avahi via DBus. The comment section at the beginning of the file contains detailed documentation.
travis build file.
PR #16: XoT support, AXFR over TLS, turn it on with master: <ip>#<authname> in unbound.conf. This uses TLS to download the AXFR (or IXFR).

Bug Fixes

Fix for #4233: guard use of NDEBUG, so that it can be passed in CFLAGS into configure.
Add log message, at verbosity 4, that says the query is encrypted with TLS, if that is enabled for the query.
Fix #4239: set NOTIMPL when deny-any is enabled, for RFC8482.
Fix #4240: Fix whitespace cleanup in example.conf.
Fix that tls-session-ticket-keys: "" on its own in unbound.conf disables the tls session ticker key calls into the OpenSSL API.
Fix crash if tls-servic-pem not filled in when necessary.
Fix auth-zone NSEC3 response for empty nonterminals with exact match nsec3 records.
Fix for out of bounds integers, thanks to OSTIF audit. It is in allocation debug code.
Fix for auth zone nsec3 ent fix for wildcard nodata.
Move goto label in answer_from_cache to the end of the function where it is more visible.
Fix auth-zone NSEC3 response for wildcard nodata answers, include the closest encloser in the answer.
Fix spelling error in log output for event method.
Fix to reinit event structure for accepted TCP (and TLS) sockets.
Fix to use event_assign with libevent for thread-safety.
verbose information about auth zone lookup process, also lookup start, timeout and fail.
Fix to wipe ssl ticket keys from memory with explicit_bzero, if available.
Fix that auth zone uses correct network type for sockets for SOA serial probes. This fixes that probes fail because earlier probe addresses are unreachable.
Fix that auth zone fails over to next master for timeout in tcp.
Squelch SSL read and write connection reset by peer and broken pipe messages. Verbosity 2 and higher enables them.
Update python documentation for init_standard().
Typos.
Fix tls write event for read state change to re-call SSL_write and not resume the TLS handshake.
Better braces in if statement in TCP fastopen code.
iana portlist updated.
Scrub RRs from answer section when reusing NXDOMAIN message for subdomain answers.
For harden-below-nxdomain: do not consider a name to be non-exitent when message contains a CNAME record.
Fix wrong query name in local zone redirect answers with a CNAME, the copy of the local alias is in unpacked form.
contrib/fastrpz.patch updated for code changes, and with git diff.
Fix #29: Solaris 11.3 and missing symbols be64toh, htobe64.
Fix #30: AddressSanitizer finding in lookup3.c. This sets the hash function to use a slower but better auditable code that does not read beyond array boundaries. This makes code better security checkable, and is better for security. It is fixed to be slower, but not read outside of the array.
Fix edns-subnet locks, in error cases the lock was not unlocked.
Fix doxygen output error on readme markdown vignettes.
Squelch log messages from tcp send about connection reset by peer. They can be enabled with verbosity at higher values for diagnosing network connectivity issues.
Attempt to fix malformed tcp response.
Fix #31: swig 4.0 and python module.
Note that so-reuseport at extreme load is better turned off, otherwise queries are not distributed evenly, on Linux 4.4.x.
Fix that spoolbuf is not used to store tcp pipelined response between mesh send and callback end.
Fix double file close in tcp pipelined response code.
Fix to define _OPENBSD_SOURCE to get reallocarray on NetBSD.
Fix to guard _OPENBSD_SOURCE from redefinition.
Fix that fixes the Fix that spoolbuf is not used to store tcp pipelined response between mesh send and callback end, this fixes error cases that did not use the correct spoolbuf.
Fix another spoolbuf storage code point, in prefetch.

Unbound 1.9.1

Download:: unbound-1.9.1.tar.gz | sha1 | sha256 | pgp sig
Date:: 11 March, 2019

Features

Add local-zone type inform_redirect, which logs like type inform, and redirects like type redirect.
Perform canonical sort for 0x20 capsforid compare of replies, this sorts rrsets in the authority and additional section before comparison, so that out of order rrsets do not cause failure.
Print query name with ip_ratelimit exceeded log lines. Spaces instead of tabs in that log message.
Print query name and IP address when domain rate limit exceeded.

Bug Fixes

Fix spelling of tls-ciphers in example.conf.in.
Fix #4224: auth_xfr_notify.rpl test broken due to typo
Fix locking for libunbound context setup with broken port config.
Fix case in which query timeout can result in marking delegation as edns_lame_known.
Set ub_ctx_set_tls call signature in ltrace config file for libunbound in contrib/libunbound.so.conf.
improve documentation for tls-service-key and forward-first.
#10: fixed pkg-config operations, PKG_PROG_PKG_CONFIG moved out of conditional section, fixes systemd builds, from Enrico Scholz.
#9: For openssl 1.0.2 use the CRYPTO_THREADID locking callbacks, still supports the set_id_callback previous API. And for 1.1.0 no locking callbacks are needed.
#8: Fix OpenSSL without ENGINE support compilation.
Wipe TLS session key data from memory on exit.
Fix that log-replies prints the correct name for local-alias names, for names that have a CNAME in local-data configuration. It logs the original query name, not the target of the CNAME.
Fix #4206: OpenSSL 1.0.2 hostname verification for FreeBSD 11.2.
Fix that qname minimisation does not skip a label when missing nameserver targets need to be fetched.
Fix #4225: clients seem to erroneously receive no answer with DNS-over-TLS and qname-minimisation.
Note default for module-config in man page.
Fix #13: Remove left-over requirements on OpenSSL >= 1.1.0 for cert name matching, from man page.
Fix capsforid canonical sort qsort callback.
Fix pythonmod include and sockaddr_un ifdefs for compile on Windows, and for libunbound.
Fix the error for unknown module in module-config is understandable, and explains it was not compiled in and where to see the list.
In example.conf explain where to put cachedb module in module-config.
In man page and example config explain that most modules have to be listed at the start of module-config.
Fix #4227: pair event del and add for libevent for tcp_req_info.
Fix #4229: Unbound man pages lack information, about access-control order and local zone tags, and elements in views.
Fix #14: contrib/unbound.init: Fix wrong comparison judgment before copying.
Fix for python module on Windows, fix fopen.
Remove memory leak on pythonmod python2 script file init.
Remove swig gcc8 python function cast warnings, they are ignored.
Print correct module that failed when module-config is wrong.

Unbound 1.9.0

Download:: unbound-1.9.0.tar.gz | sha1 | sha256 | pgp sig
Date:: 5 February, 2019

Features

for the DNS flag day: remove EDNS lame procedure, do not re-query without EDNS after timeout.
log-tag-queryreply: yes in unbound.conf tags the log-queries and log-replies in the log file for easier log filter maintenance.
ip-ratelimit-factor of 1 allows all traffic through, instead of the previous blocking everything.
Fix #4206: support openssl 1.0.2 for TLS hostname verification, alongside the 1.1.0 and later support that is already there.
Add contrib/unbound-fuzzme.patch from Jacob Hoffman-Andrews, the patch adds a program used for fuzzing.
streamtcp option -a send queries consecutively and prints answers as they arrive.
out-of-order processing for TCP and TLS.
Add stream-wait-size: 4m config option to limit the maximum memory used by waiting tcp and tls stream replies. This avoids a denial of service where these replies use up all of the memory.
unbound-control stats has mem.streamwait that counts TCP and TLS waiting result buffers.
Patch from Manabu Sonoda with tls-ciphers and tls-ciphersuites options for unbound.conf.
Patch for TLS session resumption from Manabu Sonoda, enable with tls-session-ticket-keys in unbound.conf.
ub_ctx_set_tls call for libunbound that enables DoT for the machines set with ub_ctx_set_fwd. Patch from Florian Obser.

Bug Fixes

Fix that unbound-checkconf does not complains if the config file is not placed inside the chroot.
Refuse to start with no ports.
Remove clang analysis warnings.
Patch for typo in unbound.conf man page.
Fix icon, no ragged edges and nicer resolutions available, for eg. Win 7 and Windows 10 display.
cache-max-ttl also defines upperbound of initial TTL in response.
Fix config parser memory leaks.
Fix for FreeBSD port make with dnscrypt and dnstap enabled.
Fixup openssl 1.0.2 compile
Fix for crash in dns64 module if response is null.
On FreeBSD warn if systcl settings do not allow server TCP FASTOPEN, and server tcp fastopen is enabled at compile time.
Document interaction between the tls-upstream option in the server section and forward-tls-upstream option in the forward-zone sections.
Fix syntax in comment of local alias processing.
Fix NSEC3 record that is returned in wildcard replies from auth-zone zones with NSEC3 and wildcards.
Log query name for looping module errors.
For caps-for-id fallback, use the whitelist to avoid timeout starting a fallback sequence for it.
increase mesh max activation count for capsforid long fetches.
Fix for #4219: secondaries not updated after serial change, unbound falls back to AXFR after IXFR gives several timeout failures.
Fix that auth zone after IXFR fallback tries the same master.
Fix for IXFR fallback to reset counter when IXFR does not timeout.
Newer aclocal and libtoolize used for generating configure scripts, aclocal 1.16.1 and libtoolize 2.4.6.
Fix unit test for python 3.7 new keyword 'async'.
clang analysis fixes, assert arc4random buffer in init, no check for already checked delegation pointer in iterator, in testcode check for NULL packet matches, in perf do not copy from NULL start list when growing capacity. Adjust host and file only when present in test header read to please checker. In testcode for unknown macro operand give zero result. Initialise the passed argv array in test code. In test code add EDNS data segment copy only when nonempty.
Patch from Florian Obser fixes some compiler warnings: include mini_event.h to have a prototype for mini_ev_cmp include edns.h to have a prototype for apply_edns_options sldns_wire2str_edns_keepalive_print is only called in the wire2str, module declare it static to get rid of compiler warning: no previous prototype for function infra_find_ip_ratedata() is only called in the infra module, declare it static to get rid of compiler warning: no previous prototype for function do not shadow local variable buf in authzone auth_chunks_delete and az_nsec3_findnode are only called in the authzone module, declare them static to get rid of compiler warning: no previous prototype for function... copy_rrset() is only called in the respip module, declare it static to get rid of compiler warning: no previous prototype for function 'copy_rrset' no need for another variable "r"; gets rid of compiler warning: declaration shadows a local variable in libunbound.c no need for another variable "ns"; gets rid of compiler warning: declaration shadows a local variable in iterator.c
Moved includes and make depend.
updated contrib/fastrpz.patch to cleanly diff.
remove compile warnings from libnettle compile.
output of newer lex 2.6.1 and bison 3.0.5.
Set build system for added call in the libunbound API.
List example config for root zone copy locally hosted with auth-zone as suggested from draft-ietf-dnsop-7706-bis-02. But with updated B root address.
Fixed spelling of tls-ciphers option in example.conf.

Unbound 1.8.3

Download:: unbound-1.8.3.tar.gz | sha1 | sha256 | pgp sig
Date:: 11 December, 2018

Bug Fixes

Fix dns64 allocation in wrong region for returned internal queries.

Unbound 1.8.2

Download:: unbound-1.8.2.tar.gz | sha1 | sha256 | pgp sig
Date:: 4 December, 2018

Features

Add fast-server-permil and fast-server-num options.
Deprecate low-rtt and low-rtt-permil options.
Change fast-server-num default to 3.
Fix #4154: make ECS_MAX_TREESIZE configurable, with the max-ecs-tree-size-ipv4 and max-ecs-tree-size-ipv6 options.
Fix #4190: Please create a "ANY" deny option, adds the option deny-any: yes in unbound.conf. This responds with an empty message to queries of type ANY.
Fix #4126: RTT_band too low on VSAT links with 600+ms latency, adds the option unknown-server-time-limit to unbound.conf that can be increased to avoid the problem.
Add min-client-subnet-ipv6 and min-client-subnet-ipv4 options.
Support SO_REUSEPORT_LB in FreeBSD 12 with the so-reuseport: yes option in unbound.conf.
Add unbound-control view_local_datas command, like local_datas.

Bug Fixes

dnscrypt.c removed sizeof to get array bounds.
Fix testlock code to set noreturn on error routine.
Remove unused variable from contrib fastrpz/rpz.c and remove unused diagnostic pragmas that themselves generate warnings
clang analyze test is used only when assertions are enabled.
Squelch EADDRNOTAVAIL errors when the interface goes away, this omits 'can't assign requested address' errors unless verbosity is set to a high value.
Set default for so-reuseport to no for FreeBSD. It is enabled by default for Linux and DragonFlyBSD. The setting can be configured in unbound.conf to override the default.
iana port update.
Squelch log of failed to tcp initiate after TCP Fastopen failure.
Fix #4192: unbound-control-setup generates keys not readable by group.
check that the dnstap socket file can be opened and exists, print error if not.
Add markdel function to ECS slabhash.
Limit ECS scope returned to client to the scope used for caching.
Fix #4191: NXDOMAIN vs SERVFAIL during dns64 PTR query.
Fix #4141: More randomness to rrset-roundrobin.
Fix #4132: Openness/closeness of RANGE intervals in rpl files.
remade makefile dependencies.
Fix #4152: Logs shows wrong time when using log-time-ascii: yes.
Scrub NS records from NXDOMAIN responses to stop fragmentation poisoning of the cache.
Scrub NS records from NODATA responses as well.
Add patch from Jan Vcelak for pythonmod, add sockaddr_storage getters, add support for query callbacks, allow raw address access via comm_reply and update API documentation.
Removed compile warnings in pythonmod sockaddr routines.
With ./configure --with-pyunbound --with-pythonmodule PYTHON_VERSION=3.6 or with 2.7 unbound can compile and unit tests succeed for the python module.
pythonmod logs the python error and traceback on failure.
ignore debug python module for test in doxygen output.
review fixes for python module.
Fix #4209: Crash in libunbound when called from getdns.
auth zone zonefiles can be in a chroot, the chroot directory components are removed before use.
Fix that empty zonefile means the zonefile is not set and not used.
Fix to not set GLOB_NOSORT so the unbound.conf include: files are sorted and in a predictable order.
Fix #4193: Fix that prefetch failure does not overwrite valid cache entry with SERVFAIL.
Fix DNS64 to not store intermediate results in cache, this avoids other threads from picking up the wrong data. The module restores the previous no_cache_store setting when the the module is finished.
Fix #4208: 'stub-no-cache' and 'forward-no-cache' not work.
New and better fix for Fix #4193: Fix that prefetch failure does not overwrite valid cache entry with SERVFAIL.
auth-zone give SERVFAIL when expired, fallback activates when expired, and this is documented in the man page.
stat count SERVFAIL downstream auth-zone queries for expired zones.
Put new logos into windows installer.
Fix windows compile for new rrset roundrobin fix.
Update contrib fastrpz patch for latest release.
Fix chroot auth-zone fix to remove chroot prefix.
windows icon updated.

Unbound 1.8.1

Download:: unbound-1.8.1.tar.gz | sha1 | sha256 | pgp sig
Date:: 8 October, 2018

Features

Perform TLS SNI indication of the host that is being contacted for DNS over TLS service. It sets the configured tls auth name. This is useful for hosts that apart from the DNS over TLS services also provide other (web) services.

Bug Fixes

More explicitly mention the type of ratelimit when applying ip-ratelimit.
Fix spelling error in header, from getdns commit by Andreas Gelmini.
iana port update.
Fixed unused return value warnings in contrib/fastrpz.patch for asprintf.
Fix to squelch respip warning in unit test, it is printed at higher verbosity settings.
Fix spelling errors.
Fix initialisation in remote.c
Fix seed for random backup code to use explicit zero when wiped.
exit log routine is annotated as noreturn function.
free memory leaks in config strlist and str2list insert functions.
do not move unused argv variable after getopt.
Remove unused if clause in testcode.
in testcode, free async ids, initialise array, and check for null pointer during test of the test. And use exit for return to note irregular program stop.
Free memory leak in config strlist append.
make sure nsec3 comparison salt is initialized.
unit test has clang analysis.
remove unused variable assignment from iterator scrub routine.
check for null in delegation point during iterator refetch in forward zone.
neater pointer cast in libunbound context quit routine.
initialize statistics totals for printout.
in authzone check that node exists before adding rrset.
in unbound-anchor, use readwrite memory BIO.
assertion in autotrust that packed rrset is formed correctly.
Fix memory leak when message parse fails partway through copy.
remove unused udpsize assignment in message encode.
nicer bio free code in unbound-anchor.
annotate exit functions with noreturn in unbound-control.
Fix compile on Mac for unbound, provide explicit_bzero when libc does not have it.
Fix unbound for openssl in FIPS mode, it uses the digests with the EVP call contexts.
Fix that with harden-below-nxdomain and qname minisation enabled some iterator states for nonresponsive domains can get into a state where they waited for an empty list.
Stop UDP to TCP failover after timeouts that causes the ping count to be reset by the TCP time measurement (that exists for TLS), because that causes the UDP part to not be measured as timeout.
Fix #4156: Fix systemd service manager state change notification.
Fix #4149: Add SSL cleanup for tcp timeout.
Fix #4188: IPv6 forwarders without ipv6 result in SERVFAIL, fixes qname minimisation with a forwarder when connectivity has issues from rejecting responses.
Fix fastrpz.patch to apply.

Unbound 1.8.0

Download:: unbound-1.8.0.tar.gz | sha1 | sha256 | pgp sig
Date:: 10 September, 2018

Features

unbound-control auth_zone_reload _zone_ option rereads the zonefile.
unbound-control auth_zone_transfer _zone_ option starts the probe sequence for a master to transfer the zone from and transfers when a new zone version is available.
num.queries.tls counter for queries over TLS.
log port number with err_addr logs.
dns64-ignore-aaaa: config option to list domain names for which the existing AAAA is ignored and dns64 processing is used on the A record.
Fix #4112: Fix that unbound-anchor -f /etc/resolv.conf will not pass if DNSSEC is not enabled. New option -R allows fallback from resolv.conf to direct queries.
Note RFC8162 support. SMIMEA record type can be read in by the zone record parser.
Patches from Jim Hague (Sinodun) for EDNS KeepAlive.
Add config tcp-idle-timeout (default 30s). This applies to client connections only; the timeout on TCP connections upstream is unaffected.
Add edns-tcp-keepalive and edns-tcp-keepalive timeout options and implement option in client responses.
Add delay parameter to streamtcp, -d secs. To be used when testing idle timeout.
Expose if a query (or a subquery) was ratelimited (not src IP ratelimiting) to libunbound under 'ub_result.was_ratelimited'. This also introduces a change to 'ub_event_callback_type' in libunbound/unbound-event.h.
Patch to implement tcp-connection-limit from Jim Hague (Sinodun). This limits the number of simultaneous TCP client connections from a nominated netblock.
Fix #4142: unbound.service.in: improvements and fixes. Add unit dependency ordering (based on systemd-resolved). Add 'CAP_SYS_RESOURCE' to 'CapabilityBoundingSet' (fixes warnings about missing privileges during startup). Add 'AF_INET6' to 'RestrictAddressFamilies' (without it IPV6 can't work). From Guido Shanahan.
unbound-checkconf checks if modules exist and prints if they are not compiled in the name of the wrong module.
Patch for stub-no-cache and forward-no-cache options that disable caching for the contents of that stub or forward, for when you want immediate changes visible, from Bjoern A. Zeeb.
Upgraded crosscompile script to include libunbound DLL in the zipfile.
Set libunbound to increase current, because the libunbound change to the event callback function signature. That needs programs, that use it, to recompile against the new header definition.
log-servfail: yes prints log lines that say why queries are returning SERVFAIL to clients.
log-local-actions: yes option for unbound.conf that logs all the local zone actions, a patch from Saksham Manchanda (Secure64).
#4146: num.query.subnet and num.query.subnet_cache counters.
#4140: Expose repinfo (comm_reply) to the inplace_callbacks. This gives access to reply information for the client's communication point when the callback is called before the mesh state (modules). Changes to C and Python's inplace_callback signatures were also necessary.
Set defaults to yes for a number of options to increase speed and resilience of the server. The so-reuseport, harden-below-nxdomain, and minimal-responses options are enabled by default. They used to be disabled by default, waiting to make sure they worked. They are enabled by default now, and can be disabled explicitly by setting them to "no" in the unbound.conf config file. The reuseport and minimal options increases speed of the server, and should be otherwise harmless. The harden-below-nxdomain option works well together with the recently default enabled qname minimisation, this causes more fetches to use information from the cache.
Added serve-expired-ttl and serve-expired-ttl-reset options.

Bug Fixes

Windows example service.conf edited with more windows specific configuration.
#4108: systemd reload hang fix.
Fix usage printout for unbound-host, hostname has to be last argument on BSDs and Windows.
Partial fix for permission denied on IPv6 address on FreeBSD.
Fix that auth-zone master reply with current SOA serial does not stop scan of masters for an updated zone.
Fix that auth-zone does not start the wait timer without checking if the wait timer has already been started.
#4109: Fix that package config depends on python unconditionally.
Patch, do not export python from pkg-config, from Petr Menšík.
Fix checking for libhiredis printout in configure output.
Fix typo on man page in ip-address description.
Update libunbound/python/examples/dnssec_test.py example code to also set the 20326 trust anchor for the root in the example code.
Better documentation for unblock-lan-zones and insecure-lan-zones config statements.
Fix permission denied printed for auth zone probe random port nrs.
Fix documentation ambiguity for tls-win-cert in tls-upstream and forward-tls-upstream docs.
iana port update.
Fix round robin for failed addresses with prefer-ip6: yes
Note in documentation that the cert name match code needs OpenSSL 1.1.0 or later to be enabled.
Fix to improve systemd socket activation code file descriptor assignment.
Fix for 4126 that the #define for UNKNOWN_SERVER_NICENESS can be more easily changed to adjust default rtt assumptions.
Fix #4127 unbound -h does not list -p help.
Print error if SSL name verification configured but not available in the ssl library.
Fix that ratelimit and ip-ratelimit are applied after reload of changed config file.
Resize ratelimit and ip-ratelimit caches if changed on reload.
Fix #4129 unbound-control error message with wrong cert permissions is too cryptic.
Fix #4130: print text describing -dd and unbound-checkconf on config file read error at startup, the errors may have been moved away by the startup process.
Fix #4131: for solaris, error YY_CURRENT_BUFFER undeclared.
Fix use-systemd readiness signalling, only when use-systemd is yes and not in signal handler.
Fix #4135: 64-bit Windows Installer Creates Entries Under The Wrong Registry Key, reported by Brian White.
Fix man page, say that chroot is enabled by default.
Sort out test runs when the build directory isn't the project root directory.
Error if EDNS Keepalive received over UDP.
Correct and expand manual page entries for keepalive and idle timeout.
Implement progressive backoff of TCP idle/keepalive timeout.
Fix 'make depend' to work when build dir is not project root.
Fix #4139: Fix unbound-host leaks memory on ANY.
Fix to remove systemd sockaddr function check, that is not always present. Make socket activation more lenient. But not different when socket activation is not used.
Revert previous change for #4136: because it introduces build problems.
Fix #4136: insufficiency from mismatch of FLEX capability between released tarball and build host. Fix to unconditionally call destroy in daemon.c.
Make capsforid fallback QNAME minimisation aware.
document --enable-subnet in doc/README.
Fix #4144: dns64 module caches wrong (negative) information.
Fix that printout of error for cycle targets is a verbosity 4 printout and does not wrongly print it is a memory error.
Fix segfault in auth-zone read and reorder of RRSIGs.
Fix contrib/fastrpz.patch.
Fix warning on compile without threads.
print servfail info to log as error.
added more servfail printout statements, to the iterator.
Fix classification for QTYPE=CNAME queries when QNAME minimisation is enabled.
Fix only misc failure from log-servfail when val-log-level is not enabled.
Fix lintflags for lint on FreeBSD.
Fix that a local-zone with a local-zone-type that is transparent in a view with view-first, makes queries check for answers from the local-zones defined outside of views.

Unbound 1.7.3

Download:: unbound-1.7.3.tar.gz | sha1 | sha256 | pgp sig
Date:: 21 June, 2018

Features

#4102 for NSD, but for Unbound. Named unix pipes do not use certificate and key files, access can be restricted with file and directory permissions. The option control-use-cert is no longer used, and ignored if found in unbound.conf.
Rename tls-additional-ports to tls-additional-port, because every line adds one port.

Bug Fixes

Don't count CNAME response types received during qname minimisation as query restart.
#4100: Fix stub reprime when it becomes useless.
Fix crash if ratelimit taken into use with unbound-control instead of with unbound.conf.
Patch to fix openwrt for mac os build darwin detection in configure.
#4103: Fix that auth-zone does not insist on SOA record first in file for url downloads.
Fix that first control-interface determines if TLS is used. Warn when IP address interfaces are used without TLS.
Fix that control-use-cert: no works for 127.0.0.1 to disable certs.
Fix unbound-checkconf for control-use-cert.
Fix for unbound-control on Windows and set TCP socket parameters more closely.
Fix windows unbound-control no cert bad file descriptor error.

Unbound 1.7.2

Download:: unbound-1.7.2.tar.gz | sha1 | sha256 | pgp sig
Date:: 11 June, 2018

Features

Fix low-rtt-pct to low-rtt-permil, as it is parts in one thousand.
Qname minimisation default changed to yes.
Use accept4 to speed up incoming TCP (and TLS) connections, available on Linux, FreeBSD and OpenBSD.
tls-win-cert option that adds the system certificate store for authenticating DNS-over-TLS connections. It can be used instead of the tls-cert-bundle option, or with it to add certificates.
Patch from Syzdek: Add ability to ignore RD bit and treat all requests as if the RD bit is set.
Rename additional-tls-port to tls-additional-ports. The older name is accepted for backwards compatibility.

Bug Fixes

Fix for crash in daemon_cleanup with dnstap during reload, from Saksham Manchanda.
Also that for dnscrypt.
Fix spelling error in man page and note defaults as no instead of off.
Fix that unbound-control reload frees the rrset keys and returns the memory pages to the system.
Fix fail to reject dead peers in forward-zone, with ssl-upstream.
Fix that configure --with-libhiredis also turns on cachedb.
Fix gcc 8 buffer warning in testcode.
Fix function type cast warning in libunbound context callback type.
Fix windows to not have sticky TLS events for TCP.
Fix read of DNS over TLS length and data in one read call.
Fix mesh state assertion failure due to callback removal.
Fix contrib/libunbound.pc for libssl libcrypto references, from https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=226914
Fix that libunbound can do DNS-over-TLS, when configured.
Fix that windows unbound service can use DNS-over-TLS.
unbound-host initializes ssl (for potential DNS-over-TLS usage inside libunbound), when ssl upstream or a cert-bundle is configured.
For TCP and TLS connections that don't establish, perform address update in infra cache, so future selections can exclude them.
Fix that tcp sticky events are removed for closed fd on windows.
Fix close events for tcp only.
Fix windows tcp and tls spin on events.
Add routine from getdns to add windows cert store to the SSL_CTX.
in compat/arc4random call getentropy_urandom when getentropy fails with ENOSYS.
Fix that fallback for windows port.
Fix deadlock caused by incoming notify for auth-zone.

Unbound 1.7.1

Download:: unbound-1.7.1.tar.gz | sha1 | sha256 | pgp sig
Date:: 3 May, 2018

Features

Add --with-libhiredis, unbound support for a new cachedb backend that uses a Redis server as the storage. This implementation depends on the hiredis client library (https://redislabs.com/lp/hiredis/). And unbound should be built with both --enable-cachedb and --with-libhiredis[=PATH] (where $PATH/include/hiredis/hiredis.h should exist). Patch from Jinmei Tatuya (Infoblox).
Create additional tls service interfaces by opening them on other portnumbers and listing the portnumbers as additional-tls-port: nr.
ED448 support.
num.query.authzone.up and num.query.authzone.down statistics counters.
Accept both option names with and without colon for get_option and set_option.
low-rtt and low-rtt-pct in unbound.conf enable the server selection of fast servers for some percentage of the time.
num.query.aggressive.NOERROR and num.query.aggressive.NXDOMAIN statistics counters.
allow-notify: config statement for auth-zones.
Can set tls authentication with forward-addr: IP#tls.auth.name And put the public cert bundle in tls-cert-bundle: "ca-bundle.pem". such as forward-addr: 9.9.9.9@853#dns.quad9.net or 1.1.1.1@853#cloudflare-dns.com
list_auth_zones unbound-control command.
Added root-key-sentinel support

Bug Fixes

Fix #3727: Protocol name is TLS, options have been renamed but documentation is not consistent.
Check IXFR start serial.
Fix typo in documentation.
Fix #3736: Fix 0 TTL domains stuck on SERVFAIL unless manually flushed with serve-expired on.
Fix #3817: core dump happens in libunbound delete, when queued servfail hits deleted message queue.
corrected a minor typo in the changelog.
move htobe64/be64toh portability code to cachedb.c.
iana port update.
Do not use cached NSEC records to generate negative answers for domains under DNSSEC Negative Trust Anchors.
Fix unbound-control get_option aggressive-nsec
Check "result" in dup_all(), by Florian Obser.
Fix #4043: make test fails due to v6 presentation issue in macOS.
Fix unable to resolve after new WLAN connection, due to auth-zone failing with a forwarder set. Now, auth-zone is only used for answers (not referrals) when a forwarder is set.
Combine write of tcp length and tcp query for dns over tls.
nitpick fixes in example.conf.
Fix above stub queries for type NS and useless delegation point.
Fix unbound-control over pipe with openssl 1.1.1, the TLSv1.3 tls_choose_sigalg routine does not allow the ciphers for the pipe, so use TLSv1.2.
Fix that flush_zone sets prefetch ttl expired, so that with serve-expired enabled it'll start prefetching those entries.
Fix downstream auth zone, only fallback when auth zone fails to answer and fallback is enabled.
Fix for max include depth for authzones.
Fix memory free on fail for $INCLUDE in authzone.
Fix that an internal error to look up the wrong rr type for auth zone gets stopped, before trying to send there.
Fix auth zone target lookup iterator.
Fix auth-zone retry timer to be on schedule with retry timeout, with backoff. Also time a refresh at the zone expiry.
Fix #658: unbound using TLS in a forwarding configuration does not verify the server's certificate (RFC 8310 support).
For addr with #authname and no @port notation, the default is 853.
man page documentation for dns-over-tls forward-addr '#' notation.
removed free from failed parse case.
Fix #4091: Fix that reload of auth-zone does not merge the zonefile with the previous contents.
Delete auth zone when removed from config.
makedist uses bz2 for expat code, instead of tar.gz.
Fix #4092: libunbound: use-caps-for-id lacks colon in config_set_option.
auth zone http download stores exact copy of downloaded file, including comments in the file.
Fix sldns parse failure for CDS alternate delete syntax empty hex.
Attempt for auth zone fix; add of callback in mesh gets from callback does not skip callback of result.
Fix cname classification with qname minimisation enabled.
Fix contrib/fastrpz.patch for this release.
Fix auth https for libev.
Fix memory leak when caching wildcard records for aggressive NSEC use
Fix for crash in daemon_cleanup with dnstap during reload, from Saksham Manchanda.
Also that for dnscrypt.

Unbound 1.7.0

Download:: unbound-1.7.0.tar.gz | sha1 | sha256 | pgp sig
Date:: 15 Mar, 2018

Features

auth-zone provides a way to configure RFC7706 from unbound.conf, eg. with auth-zone: name: "." for-downstream: no for-upstream: yes fallback-enabled: yes and masters or a zonefile with data.
Aggressive use of NSEC implementation. Use cached NSEC records to generate NXDOMAIN, NODATA and positive wildcard answers.
Accept tls-upstream in unbound.conf, the ssl-upstream keyword is also recognized and means the same. Also for tls-port, tls-service-key, tls-service-pem, stub-tls-upstream and forward-tls-upstream.
[dnscrypt] introduce dnscrypt-provider-cert-rotated option, from Manu Bretelle. This option allows handling multiple cert/key pairs while only distributing some of them. In order to reliably match a client magic with a given key without strong assumption as to how those were generated, we need both key and cert. Likewise, in order to know which ES version should be used. On the other hand, when rotating a cert, it can be desirable to only serve the new cert but still be able to handle clients that are still using the old certs's public key. The `dnscrypt-provider-cert-rotated` allow to instruct unbound to not publish the cert as part of the DNS's provider_name's TXT answer.
Update B root ipv4 address.
make ip-transparent option work on OpenBSD.
Fix #2801: Install libunbound.pc.
ltrace.conf file for libunbound in contrib.
Fix #3598: Fix swig build issue on rhel6 based system. configure --disable-swig-version-check stops the swig version check.

Bug Fixes

Fix #1749: With harden-referral-path: performance drops, due to circular dependency in NS and DS lookups.
[dnscrypt] prevent dnscrypt-secret-key, dnscrypt-provider-cert duplicates
Better documentation for cache-max-negative-ttl.
Fixed libunbound manual typo.
Fix #1949: [dnscrypt] make provider name mismatch more obvious.
Fix #2031: Double included headers
Document that errno is left informative on libunbound config read fail.
iana port update.
Fix #1913: ub_ctx_config is under circumstances thread-safe.
Fix #2362: TLS1.3/openssl-1.1.1 not working.
Fix #2034: Autoconf and -flto.
Fix #2141: for libsodium detect lack of entropy in chroot, print a message and exit.
Fix #2492: Documentation libunbound.
Fix #2882: Unbound behaviour changes (wrong) when domain-insecure is set for stub zone. It no longer searches for DNSSEC information.
Fix #3299: forward CNAME daisy chain is not working
Fix link failure on OmniOS.
Check whether --with-libunbound-only is set when using --with-nettle or --with-nss.
Fix qname-minimisation documentation (A QTYPE, not NS)
Fix that DS queries with referral replies are answered straight away, without a repeat query picking the DS from cache. The correct reply should have been an answer, the reply is fixed by the scrubber to have the answer in the answer section.
Fix that expiration date checks don't fail with clang -O2.
Fix queries being leaked above stub when refetching glue.
Copy query and correctly set flags on REFUSED answers when cache snooping is not allowed.
make depend: code dependencies updated in Makefile.
Fix #3397: Fix that cachedb could return a partial CNAME chain.
Fix #3397: Fix that when the cache contains an unsigned DNAME in the middle of a cname chain, a result without the DNAME could be returned.
Fix that unbound-checkconf -f flag works with auto-trust-anchor-file for startup scripts to get the full pathname(s) of anchor file(s).
Print fatal errors about remote control setup before log init, so that it is printed to console.
Use NSEC with longest ce to prove wildcard absence.
Only use *.ce to prove wildcard absence, no longer names.
Fix unfreed locks in log and arc4random at exit of unbound.
Fix lock race condition in dns cache dname synthesis.
Fix #3451: dnstap not building when you have a separate build dir. And removed protoc warning, set dnstap.proto syntax to proto2.
Added tests with wildcard expanded NSEC records (CVE-2017-15105 test)
Unit test for auth zone https url download.
tls-cert-bundle option in unbound.conf enables TLS authentication.
Fixes for clang static analyzer, the missing ; in edns-subnet/addrtree.c after the assert made clang analyzer produce a failure to analyze it.
Fix #3505: Documentation for default local zones references wrong RFC.
Fix #3494: local-zone noview can be used to break out of the view to the global local zone contents, for queries for that zone.
Fix for more maintainable code in localzone.
more robust cachedump rrset routine.
Save wildcard RRset from answer with original owner for use in aggressive NSEC.
Fixup contrib/fastrpz.patch so that it applies.
Fix compile without threads, and remove unused variable.
Fix compile with staticexe and python module.
Fix nettle compile.
Fix to check define of DSA for when openssl is without deprecated.
iana port update.
Fix #3582: Squelch address already in use log when reuseaddr option causes same port to be used twice for tcp connections.
Reverted fix for #3512, this may not be the best way forward; although it could be changed at a later time, to stay similar to other implementations.
Fix for windows compile.
Fixed contrib/fastrpz.patch, even though this already applied cleanly for me, now also for others.
patch to log creates keytag queries, from A. Schulze.
patch suggested by Debian lintian: allow to -> allow one to, from A. Schulze.
Attempt to remove warning about trailing whitespace.
Added documentation for aggressive-nsec: yes.

Unbound 1.6.8

Download:: unbound-1.6.8.tar.gz | sha1 | sha256 | pgp sig
Date:: 19 Jan, 2018

Bug Fixes

Fix for CVE-2017-15105: vulnerability in the processing of wildcard synthesized NSEC records.

Unbound 1.6.7

Download:: unbound-1.6.7.tar.gz | sha1 | sha256 | pgp sig
Date:: 10 Oct, 2017

Features

Set trust-anchor-signaling default to yes
Fix #1440: [dnscrypt] client nonce cache.
Fix #1435: Allow UDP to be disabled separately upstream and downstream.

Bug Fixes

Fix that looping modules always stop the query, and don't pass control.
Fix unbound-host to report error for DNSSEC state of failed lookups.
Spelling fixes, from Josh Soref.
Fix #1400: allowing use of global cache on ECS-forwarding unless always-forward.
use a cachedb answer even if it's "expired" when serve-expired is yes (patch from Jinmei Tatuya).
trigger refetching of the answer in that case (this will bypass cachedb lookup)
allow storing a 0-TTL answer from cachedb in the in-memory message cache when serve-expired is yes
Fix DNSCACHE_STORE_ZEROTTL to be bigger than 0xffff.
Log name of looping module
Fix #1450: Generate again patch contrib/aaaa-filter-iterator.patch (by Danilo G. Baio).
Fix param unused warning for windows exportsymbol compile.
Use RCODE from A query on DNS64 synthesized answer.
Fix trust-anchor-signaling works in libunbound.
Fix spelling in unbound-control man page.

Unbound 1.6.6

Download:: unbound-1.6.6.tar.gz | sha1 | sha256 | pgp sig
Date:: 18 Sep, 2017

Features

unbound-control dump_infra prints port number for address if not 53.
Fix #1344: RFC6761-reserved domains: test. and invalid.
Fix #1349: allow suppression of pidfiles (from Daniel Kahn Gillmor). With the -p option unbound does not create a pidfile.
Added stats for queries that have been ratelimited by domain recursion.
Patch to show DNSCrypt status in help output, from Carsten Strotmann.
Fix #1407: Add ECS options check to unbound-checkconf.
Fix #1415: [dnscrypt] shared secret cache, patch from Manu Bretelle.

Bug Fixes

fixup of dnscrypt_cert_chacha test (from Manu Bretelle).
First fix for zero b64 and hex text zone format in sldns.
Better fixup of dnscrypt_cert_chacha test for different escapes.
Fix that infra cache host hash does not change after reconfig.
Fix python example0 return module wait instead of error for pass.
enhancement for hardened-tls for DNS over TLS. Removed duplicated security settings.
Fix for unbound-checkconf, check ipsecmod-hook if ipsecmod is turned on.
Fix #1331: libunbound segfault in threaded mode when context is deleted.
Fix pythonmod link line option flag.
Fix openssl 1.1.0 load of ssl error strings from ssl init.
Fix #1332: Bump verbosity of failed chown'ing of the control socket.
Redirect all localhost names to localhost address for RFC6761.
Fix #1350: make cachedb backend configurable (from JINMEI Tatuya).
Fix tests to use .tdir (from Manu Bretelle) instead of .tpkg.
upgrade aclocal(pkg.m4 0.29.1), config.guess(2016-10-02), config.sub(2016-09-05).
annotate case statement fallthrough for gcc 7.1.1.
flex output from flex 2.6.1.
snprintf of thread number does not warn about truncated string.
squelch TCP fast open error on FreeBSD when kernel has it disabled, unless verbosity is high.
remove warning from windows compile.
Fix compile with libnettle
Fix DSA configure switch (--disable dsa) for libnettle and libnss.
Fix #1365: Add Ed25519 support using libnettle.
Fix #1394: mix of serve-expired and response-ip could cause a crash.
Remove unused iter_env member (ip6arpa_dname)
Do not reset rrset.bogus stats when called using stats_noreset.
Do not add rrset_bogus and query ratelimiting stats per thread, these module stats are global.
Fix #1397: Recursive DS lookups for AS112 zones names should recurse.
Fix #1398: make cachedb secret configurable.
Remove spaces from Makefile.
Fix issue on macOX 10.10 where TCP fast open is detected but not implemented causing TCP to fail. The fix allows fallback to regular TCP in this case and is also more robust for cases where connectx() fails for some reason.
Fix #1402: squelch invalid argument error for fd_set_block on windows.
Fix to reclaim tcp handler when it is closed due to dnscrypt buffer allocation failure.
Fix #1415: patch to free dnscrypt environment on reload.
iana portlist update
Small fixes for the shared secret cache patch.
Fix WKS records on kvm autobuild host, with default protobyname entries for udp and tcp.
Fix #1414: fix segfault on parse failure and log_replies.
zero qinfo in handle_request, this zeroes local_alias and also the qname member.
new keys and certs for dnscrypt tests.
fixup WKS test on buildhost without servicebyname.
updated contrib/fastrpz.patch to apply with configparser changes.
Fix #1416: qname-minimisation breaks TLSA lookups with CNAMEs.
Fix #1424: cachedb:testframe is not thread safe.
Fix #1417: [dnscrypt] shared secret cache counters, and works when dnscrypt is not enabled. And cache size configuration option.
Fix #1418: [ip ratelimit] initialize slabhash using ip-ratelimit-slabs.
Recommend 1472 buffer size in unbound.conf
Fix #1412: QNAME minimisation strict mode not honored
Fix #1434: Fix windows openssl 1.1.0 linking.
Add dns64 for client-subnet in unbound-checkconf.

Unbound 1.6.5

Download:: unbound-1.6.5.tar.gz | sha1 | sha256 | pgp sig
Date:: 21 Aug, 2017

Bug Fixes

Fix install of trust anchor when two anchors are present, makes both valid. Checks hash of DS but not signature of new key. This fixes the root.key file if created when unbound is installed between sep11 and oct11 2017.

Unbound 1.6.4

Download:: unbound-1.6.4.tar.gz | sha1 | sha256 | pgp sig
Date:: 27 Jun, 2017

Features

Implemented trust anchor signaling using key tag query.
unbound-checkconf -o allows query of dnstap config variables. Also unbound-control get_option. Also for dnscrypt.
unbound.h exports the shm stats structures. They use type long long and no ifdefs, and ub_ before the typenames.
Implemented opportunistic IPsec support module (ipsecmod).
Added redirect-bogus.patch to contrib directory.
Support for the ED25519 algorithm with openssl (from openssl 1.1.1).
renumbering B-Root's IPv6 address to 2001:500:200::b.
Fix #1276: [dnscrypt] add XChaCha20-Poly1305 cipher.
Fix #1277: disable domain ratelimit by setting value to 0.
Added fastrpz patch to contrib

Bug Fixes

Added ECS unit test (from Manu Bretelle).
ECS documentation fix (from Manu Bretelle).
Fix #1252: more indentation inconsistencies.
Fix #1253: unused variable in edns-subnet/addrtree.c:getbit().
Fix #1254: clarify ratelimit-{for,below}-domain (from Manu Bretelle).
iana portlist update
Based on #1257: check parse limit before t increment in sldns RR string parse routine.
Fix #1258: Windows 10 X64 unbound 1.6.2 service will not start. and fix that 64bit getting installed in C:\Program Files (x86).
Fix #1259: "--disable-ecdsa" argument overwritten by "#ifdef SHA256_DIGEST_LENGTH@daemon/remote.c".
iana portlist update
Added test for leak of stub information.
Fix sldns wire2str printout of RR type CAA tags.
Fix sldns int16_data parse.
Fix sldns parse and printout of TSIG RRs.
sldns SMIMEA and AVC definitions, same as getdns definitions.
Fix tcp-mss failure printout text.
Set SO_REUSEADDR on outgoing tcp connections to fix the bind before connect limited tcp connections. With the option tcp connections can share the same source port (for different destinations).
Add 'c' to getopt() in testbound.
Adjust servfail by iterator to not store in cache when serve-expired is enabled, to avoid overwriting useful information there.
Fix queries for nameservers under a stub leaking to the internet.
document trust-anchor-signaling in example config file.
updated configure, dependencies and flex output.
better module memory lookup, fix of unbound-control shm names for module memory printout of statistics.
Fix type AVC sldns rrdef.
Some whitespace fixup.
Fix #1265: contrib/unbound.service contains hardcoded path.
Fix #1265: to use /bin/kill.
Fix #1267: Libunbound validator/val_secalgo.c uses obsolete APIs, and compatibility with BoringSSL.
Fix #1268: SIGSEGV after log_reopen.
exec_prefix is by default equal to prefix.
printout localzone for duplicate local-zone warnings.
Fix assertion for low buffer size and big edns payload when worker overrides udpsize.
Support for openssl EVP_DigestVerify.
Fix #1269: inconsistent use of built-in local zones with views.
Add defaults for new local-zone trees added to views using unbound-control.
Fix #1273: cachedb.c doesn't compile with -Wextra.
If MSG_FASTOPEN gives EPIPE fallthrough to try normal tcp write.
Also use global local-zones when there is a matching view that does not have any local-zone specified.
Fix fastopen EPIPE fallthrough to perform connect.
Fix #1274: automatically trim chroot path from dnscrypt key/cert paths (from Manu Bretelle).
Fix #1275: cached data in cachedb is never used.
Fix that unbound-control can set val_clean_additional and val_permissive_mode.
Add dnscrypt XChaCha20 tests.
Detect chacha for dnscrypt at configure time.
dnscrypt unit tests with chacha.
Added domain name based ECS whitelist.
Fix #1278: Incomplete wildcard proof.
Fix #1279: Memory leak on reload when python module is enabled.
Fix #1280: Unbound fails assert when response from authoritative contains malformed qname. When 0x20 caps-for-id is enabled, when assertions are not enabled the malformed qname is handled correctly.
More fixes in depth for buffer checks in 0x20 qname checks.
Fix stub zone queries leaking to the internet for harden-referral-path ns checks.
Fix query for refetch_glue of stub leaking to internet.
Fix #1301: memory leak in respip and tests.
Free callback in edns-subnetmod on exit and restart.
Fix memory leak in sldns_buffer_new_frm_data.
Fix memory leak in dnscrypt config read.
Fix dnscrypt chacha cert support ifdefs.
Fix dnscrypt chacha cert unit test escapes in grep.
Fix to unlock view in view test.
Fix warning in pythonmod under clang compiler.
Fix lintian typo.
Fix #1316: heap read buffer overflow in parse_edns_options.

Unbound 1.6.3

Download:: unbound-1.6.3.tar.gz | sha1 | sha256 | pgp sig
Date:: 13 Jun, 2017

Bug Fixes

Fix #1280: Unbound fails assert when response from authoritative contains malformed qname. When 0x20 caps-for-id is enabled, when assertions are not enabled the malformed qname is handled correctly.

Unbound 1.6.2

Download:: unbound-1.6.2.tar.gz | sha1 | sha256 | pgp sig
Date:: 24 Apr, 2017

Features

Add trustanchor.unbound CH TXT that gets a response with a number of TXT RRs with a string like "example.com. 2345 1234" with the trust anchors and their keytags.
Patch for view functionality for local-data-ptr from Björn Ketelaars.
Response actions based on IP address from Jinmei Tatuya (Infoblox).
Patch from Luiz Fernando Softov for Stats Shared Memory.
unbound-control stats_shm command prints stats using shared memory, which uses less cpu.
--disable-sha1 disables SHA1 support in RRSIG, so from DNSKEY and DS records. NSEC3 is not disabled.
#1217. DNSCrypt support, with --enable-dnscrypt, libsodium and then enabled in the config file from Manu Bretelle.
Merge EDNS Client subnet implementation from feature branch into main branch, using new EDNS processing framework.
harden-algo-downgrade: no also makes unbound more lenient about digest algorithms in DS records.

Bug Fixes

sldns has ED25519 and ED448 algorithm number and name for display.
sldns updated for vfixed and buffer resize indication from getdns.
iana portlist update
Fix #1224: Fix that defaults should not fall back to "Program Files (x86) if Unbound is 64bit by default on windows.
Fix doc/CNAME-basedRedirectionDesignNotes.pdf zone static to redirect.
make depend, autoconf, doxygen and lint fixed up.
include sys/time.h for new shm code on NetBSD.
Fix #1227: Fix that Unbound control allows weak ciphersuits.
Fix #1226: provide official 32bit binary for windows.
For #1227: if we have sha256, set the cipher list to have no known vulns.
Fix testpkts.c, check if DO bit is set, not only if there is an OPT record.
Fix #1229: Systemd service sandboxing in contrib/unbound.service.
Fix #1230: swig version 2.0.1 is required for pythonmod, with 1.3.40 it crashes when running repeatly unbound-control reload.
fix enum conversion warnings
fake-sha1 test option; print warning if used. To make unit tests.
unbound-control list local zone and data commands listed in the help output.
Fix #1234: shortening DNAME loop produces duplicate DNAME records in ANSWER section.
testbound understands Deckard MATCH rcode question answer commands.
Fix #1235: Fix too long DNAME expansion produces SERVFAIL instead of YXDOMAIN + query loop, reported by Petr Spacek.
Fix that SHM is not inited if not enabled.
Fix that looped DNAMEs do not cause unbound to spend effort.
trustanchor tags are sorted. reusable routine to fetch taglist.
Fix #1237: Wrong resolving in chain, for norec queries that get SERVFAIL returned.
make depend, autoconf, remove warnings about statement before var.
lru_demote and lruhash_insert_or_retrieve functions for getdns.
fixup for lruhash (whitespace and header file comment).
dnscrypt tests.
Fix doxygen for dnscrypt files.
Fix #1238: segmentation fault when adding through the remote interface a per-view local zone to a view with no previous (configured) local zones.
Fix #1229: Systemd service sandboxing, options in wrong sections.
Fix #1239: configure fails to find python distutils if python prints warning.
Fix to prevent non-referal query from being cached as referal when the no_cache_store flag was set.
Remove (now unused) event2 include from dnscrypt code.
Fix #1217: Add metrics to unbound-control interface showing crypted, cert request, plaintext and malformed queries (from Manu Bretelle).
Do not add current time twice to TTL before ECS cache store.
Do not touch rrset cache after ECS cache message generation.
Use LDNS_EDNS_CLIENT_SUBNET as default ECS opcode.
Fix #1244: document that use of chroot requires trust anchor file to be under chroot.
Small fixup for documentation.
Fix respip for braces when locks arent used.
Fix pythonmod for cb changes.
Generalise inplace callback (de)registration
(de)register inplace callbacks for module id
No unbound-control set_option for ECS options
Deprecated client-subnet-opcode config option
Introduced client-subnet-always-forward config option
Changed max-client-subnet-ipv6 default to 56 (as in RFC)
Removed extern ECS config options
module_restart_next now calls clear on all following modules
Also create ECS module qstate on module_event_pass event
remove malloc from inplace_cb_register
Unlock view in respip unit test
Some whitespace fixup.
Remove ECS option after REFUSED answer.
Fix small memory leak in edns_opt_copy_alloc.
Respip dereference after NULL check.
Zero initialize addrtree allocation.
Use correct identifier for SHM destroy.
Display ECS module memory usage.
Fix #1247: unbound does not shorten source prefix length when forwarding ECS.
Properly check for allocation failure in local_data_find_tag_datas.
Fix #1249: unbound doesn't return FORMERR to bogus ECS.
Set SHM ECS memory usage to 0 when module not loaded.
subnet mem value is available in shm, also when not enabled, to make the struct easier to memmap by other applications, independent of the configuration of unbound.
Fix #1250: inconsistent indentation in services/listen_dnsport.c.

Unbound 1.6.1

Download:: unbound-1.6.1.tar.gz | sha1 | sha256 | pgp sig
Date:: 21 Feb, 2017

Features

configure --enable-systemd and lets unbound use systemd sockets if you enable use-systemd: yes in unbound.conf. Also there are contrib/unbound.socket and contrib/unbound.service: systemd files for unbound, install them in /usr/lib/systemd/system. Contributed by Sami Kerola and Pavel Odintsov.
Fix #1187: Source IP rate limiting, patch from Larissa Feng.
Fix #1184: Log DNS replies. This includes the same logging information that DNS queries and response code and response size, patch from Larissa Feng.
Include root trust anchor id 20326 in unbound-anchor.
64bit is default for windows builds.

Bug Fixes

Fix stack size too small for Alpine Linux.
Fix unbound-control and ipv6 only.
Fix Resource leak (socket), at startup.
Fix attempt to fix setup error at end, pop result values at end of install.
iana portlist update
Fix inet_ntop and inet_pton warnings in windows compile.
Fix remove comment about view deletion.
Fix unresolved symbol 'fake_dsa' in libunbound.so when built with Nettle
Fix to not echo back EDNS options in local-zone error response.
Fix if cross build fails when $host isn't `uname` for getentropy.
Fix reload chdir failure when also chrooted to that directory.
Fix to return formerr for queries for meta-types, to avoid packet amplification if this meta-type is sent on to upstream.
Fix missing unlock in answer_from_cache error condition.
Fix code comment that packed_rrset_data is not always 'packed'.
Fix to also block meta types 128 through to 248 with formerr.
Fix that some view-related commands are missing from 'unbound-control -h'
Fix to rename ub_callback_t to ub_callback_type, because POSIX reserves _t typedefs.
Fix to rename internally used types from _t to _type, because _t type names are reserved by POSIX.
Increase MAX_MODULE to 16.
Fix can't enable interface-automatic if no IPv6 with more helpful error message.
fix root_anchor test for updated icannbundle.pem lower certificates.
Fix compile on solaris of the fix to use $host detect.
Fix for type name change and fix warning on windows compile.
Fix pythonmod for typedef changes.
Fix dnstap for warning of set but not used.
Fix autoconf of systemd check for lack of pkg-config.

Unbound 1.6.0

Download:: unbound-1.6.0.tar.gz | sha1 | sha256 | pgp sig
Date:: 15 Dec, 2016

Features

Added generic EDNS code for registering known EDNS option codes, bypassing the cache response stage and uniquifying mesh states. Four EDNS option lists were added to module_qstate (module_qstate.edns_opts_*) to store EDNS options from/to front/back side.
Added two flags to module_qstate (no_cache_lookup, no_cache_store) that control the modules' cache interactions.
Added code for registering inplace callback functions. The registered functions can be called just before replying with local data or Chaos, replying from cache, replying with SERVFAIL, replying with a resolved query, sending a query to a nameserver. The functions can inspect the available data and maybe change response/query related data (i.e. append EDNS options).
Updated Python module for the above.
Updated Python documentation.
Added views functionality.
Added qname-minimisation-strict config option.
Patch that resolves CNAMEs entered in local-data conf statements that point to data on the internet, from Jinmei Tatuya (Infoblox).
serve-expired config option: serve expired responses with TTL 0.
.gitattributes line for githubs code language display.
log-identity: config option to set sys log identity, patch from "Robin H. Johnson" (robbat2@gentoo.org).
Added stub-ssl-upstream and forward-ssl-upstream options.
Added local-zones and local-data bulk addition and removal functionality in unbound-control (local_zones, local_zones_remove, local_datas and local_datas_remove).

Bug Fixes

Fix #836: unbound could echo back EDNS options in an error response.
Fix #838: 1.5.10 cannot be built on Solaris, undefined PATH_MAX.
Fix #839: Memory grows unexpectedly with large RPZ files.
Fix #840: infinite loop in unbound_munin_ plugin on unowned lockfile.
Fix #841: big local-zone's make it consume large amounts of memory.
Fix dnstap relaying "random" messages instead of resolver/forwarder responses, from Nikolay Edigaryev.
Fix Nits for 1.5.10 reported by Dag-Erling Smorgrav.
Fix #1117: spelling errors, from Robert Edmonds.
iana portlist update.
fix memoryleak logfile when in debug mode.
Re-fix #839 from view commit overwrite.
Fixup const void cast warning.
Removed patch comments from acllist.c and msgencode.c
Added documentation doc/CNAME-basedRedirectionDesignNotes.pdf, from Jinmei Tatuya (Infoblox).
Fix #1125: unbound could reuse an answer packet incorrectly for clients with different EDNS parameters, from Jinmei Tatuya.
Fix #1118: libunbound.pc sets strange Libs, Libs.private values.
Added Requires line to libunbound.pc
Fix #1130: whitespace in example.conf.in more consistent.
suppress compile warning in lex files.
init lzt variable, for older gcc compiler warnings.
fix --enable-dsa to work, instead of copying ecdsa enable.
Fix DNSSEC validation of query type ANY with DNAME answers.
Fixup query_info local_alias init.
Ported tests for local_cname unit test to testbound framework.
g.root-servers.net has AAAA address.
Fix #1134: unbound-control set_option -- val-override-date: -1 works immediately to ignore datetime, or back to 0 to enable it again. The -- is to ignore the '-1' as an option flag.
Patch for server.num.zero_ttl stats for count of expired replies, from Pavel Odintsov.
Fix failure to build on arm64 with no sbrk.
Set OpenSSL security level to 0 when using aNULL ciphers.
configure detects ssl security level API function in the autoconf manner. Every function on its own, so that other libraries (eg. LibreSSL) can develop their API without hindrance.
Fix #1154: segfault when reading config with duplicate zones.
Note that for harden-below-nxdomain the nxdomain must be secure, this means nsec3 with optout is insufficient.
Fix #1155: test status code of unbound-control in 04-checkconf, not the status code from the tee command.
Fix #1158: reference RFC 8020 "NXDOMAIN: There Really Is Nothing Underneath" for the harden-below-nxdomain option.
patch from Dag-Erling Smorgrav that removes code that relies on sbrk().
Make access-control-tag-data RDATA absolute. This makes the RDATA origin consistent between local-data and access-control-tag-data.
Fix NSEC ENT wildcard check. Matching wildcard does not have to be a subdomain of the NSEC owner.
QNAME minimisation uses QTYPE=A, therefore always check cache for this type in harden-below-nxdomain functionality.
Added unit test for QNAME minimisation + harden below nxdomain synergy.
Fix that with openssl 1.1 control-use-cert: no uses less cpu, by using no encryption over the unix socket.
hyphen as minus fix, by Andreas Schulze
Fix #1170: document that 'inform' local-zone uses local-data.
Fix #1173: differ local-zone type deny from unset tag_actions element.
Add DSA support for OpenSSL 1.1.0
Fix remote control without cert for LibreSSL
Fix downcast warnings from visual studio in sldns code.

Unbound 1.5.10

Download:: unbound-1.5.10.tar.gz | sha1 | sha256 | pgp sig
Date:: 27 Sep, 2016

Features

Create a pkg-config file for libunbound in contrib.
TCP Fast open patch from Sara Dickinson.
Finegrained localzone control with define-tag, access-control-tag, access-control-tag-action, access-control-tag-data, local-zone-tag, and local-zone-override. And added types always_transparent, always_refuse, always_nxdomain with that.
If more than half of tcp connections are in use, a shorter timeout is used (200 msec, vs 2 minutes) to pressure tcp for new connects.
Fix #787: outgoing-interface netblock/64 ipv6 option to use linux freebind to use 64bits of entropy for every query with random local part.
For #787: prefer-ip6 option for unbound.conf prefers to send upstream queries to ipv6 servers.
Add default root hints for IPv6 E.ROOT-SERVERS.NET, 2001:500:a8::e.
keep debug symbols in windows build.

Bug Fixes

Fix unbound 1.5.9: -h segfault (null deref).
Fix unbound-anchor.exe file location defaults to Program Files with (x86) appended.
Fix to not ignore return value of chown() in daemon startup.
Better help text from -h (from Ray Griffith).
Fix Non-standard Python location build failure with pyunbound.
Improve threadsafety for openssl 0.9.8 ecdsa dnssec signatures.
Revert fix for NetworkService account on windows due to breakage it causes.
Fix that windows install will not overwrite existing service.conf file (and ignore gui config choices if it exists).
And delete service.conf.shipped on uninstall.
In unbound.conf directory: dir immediately changes to that directory, so that include: file below that is relative to that directory. With chroot, make the directory an absolute path inside chroot.
do not delete service.conf on windows uninstall.
document directory immediate fix and allow EXECUTABLE syntax in it on windows.
Fix directory: fix for unbound-checkconf, it restores cwd.
Use QTYPE=A for QNAME minimisation.
Keep track of number of time-outs when performing QNAME minimisation. Stop minimising when number of time-outs for a QNAME/QTYPE pair is more than three.
Fix unbound-host and unbound-anchor crash on windows, ignore null delete for wsaevent.
Fix spelling in freebind option man page text.
Fix windows link of ssl with crypt32.
Fix Union casting is non-portable.
Fix MAP_ANON not defined in HP-UX 11.31.
Fix prealloc() is an HP-UX system library call.
Decrease dp attempts at each QNAME minimisation iteration
Fix Build configure assumess that having getpwnam means there is endpwent function available.
Updated repository with newer flex and bison output.
Fix static compile on windows missing gdi32.
Fix dynamic link of anchor-update.exe on windows.
Fix detect of mingw for MXE package build.
Fixes for 64bit windows compile.
Fix for nettle 3.0: Failed to build with Nettle >= 3.0 and --with-libunbound-only --with-nettle.
Fixed unbound.doxygen for 1.8.11.
Fix Client-side TCP fast open fails (Linux).
Fix missing error condition handling in daemon_create_workers().
Fix workaround for function parameters that are "unused" without log_assert.
Fix confusing (and incorrect) code comment in daemon_cleanup().
Fix wrong comment removed.
use sendmsg instead of sendto for TFO.
Fix workaround for possible some "unused" function parameters in test code, from Jinmei Tatuya.
Note that OPENPGPKEY type is RFC 7929.
Fix #804: unbound stops responding after outage. Fixes queries that attempt to wait for an empty list of subqueries.
Fix for #804: lower num_target_queries for iterator also for failed lookups.
Fix set sldns_str2wire_rr_buf() dual meaning len parameter in each iteration in find_tag_datas().
Fix OpenSSL 1.1.0 compatibility, patch from Sebastian A. Siewior.
RFC 7958 is now out, updated docs for unbound-anchor.
Fix for compile without warnings with openssl 1.1.0.
Fix refuse_non_local could result in a broken response.
iana portlist update.
Fix compile with openssl 1.1.0 with api=1.1.0.
Fix doc of sldns_wire2str_rdata_buf() return value has an off-by-one typo, from Jinmei Tatuya (Infoblox).
Fix incomplete prototypes reported by Dag-Erling Smørgrav.
Fix missing type in access-control-tag-action redirect results in NXDOMAIN.
Take configured minimum TTL into consideration when reducing TTL to original TTL from RRSIG.
Fix workaround for spurious fread_chk warning against petal.c
Silenced flex-generated sign-unsigned warning print with gcc diagnostic pragma.
Fix for new splint on FreeBSD. Fix cast for sockaddr_un.sun_len.
fix potential memory leak in daemon/remote.c and nullpointer dereference in validator/autotrust.
Fix error for duplicate local zone entry.
Fix --disable-dsa with nettle verify.

Unbound 1.5.9

Download:: unbound-1.5.9.tar.gz | sha1 | sha256 | pgp sig
Date:: 09 Jun, 2016

Features

generic edns option parse and store code.
Updated L root IPv6 address.
User defined pluggable event API for libunbound
ip_freebind: yesno option in unbound.conf sets IP_FREEBIND for binding to an IP address while the interface or address is down.
OpenSSL 1.1.0 portability, --disable-dsa configure option.
disable-dnssec-lame-check config option from Charles Walker.

Bug Fixes

Fix unbound.py - idn2dname throws UnicodeError when idnname contains trailing dot.
configure tests for the weak attribute support by the compiler.
Fix assert in outnet_serviced_query_stop.
Updated configure and ltmain.sh.
Fixup of compile fix for pluggable event API from P.Y. Adi Prasaja.
Fixup backend2str for libev.
Fix libev usage of dispatch return value.
No side effects in tolower() call, in case it is a macro.
Fix warnings in ifdef corner case, older or unknown libevent.
Fix ip-transparent for ipv6 on FreeBSD, thanks to Nick Hibma.
Fix ip-transparent for tcp on freebsd.
Fix unbound sets CD bit on all forwards. If no trust anchors, it'll not set CD bit when forwarding to another server. If a trust anchor, no CD bit on the first attempt to a forwarder, but CD bit thereafter on repeated attempts to get DNSSEC.
Limit number of QNAME minimisation iterations.
Validate QNAME minimised NXDOMAIN responses.
If QNAME minimisation is enabled, do cache lookup for QTYPE NS in harden-below-nxdomain.
Fix compile of getentropy_linux for SLES11 servicepack 4.
Fix dnstap-log-resolver-response-messages, from Nikolay Edigaryev.
Fix test for openssl to use HMAC_Update for 1.1.0.
ERR_remove_state deprecated since openssl 1.0.0.
OPENSSL_config is deprecated, removing.
Document permit-small-holddown for 5011 debug.
Fix unbound-checkconf gets SIGSEGV when use against a malformatted conf file.
Fix document dump_requestlist is for first thread.
Fix some malformed reponses to edns queries get fallback to nonedns.
Fix 0x20 capsforid no longer checks type PTR, for compatibility with cisco dns guard. This lowers false positives.
Fix sldns with static checking fixes copied from getdns.
Fix memory leak in out-of-memory conditions of local zone add.
Fix DNSSEC LAME false positive resolving nic.club.
Fix dns64 should synthesize results on timeout/errors.
No QNAME minimisation fall-back for NXDOMAIN answers from DNSSEC signed zones.
Fix Reference to an expired Internet-Draft in harden-below-nxdomain documentation.
remove memory leak from lame-check patch.
Fix Small subgroup attack on DH used in unix pipe on localhost if unbound control uses a unix local named pipe.
Document write permission to directory of trust anchor needed.
Fix Unbound Service Sometimes Can Not Shutdown Completely, WER Report Shown Up. Close handle before closing WSA.
Fix time in case answer comes from cache in ub_resolve_event().
Fix windows service to be created run with limited rights, as a network service account, from Mario Turschmann.
Fix retry resource temporarily unavailable on control pipe.
iana ports fetched via https.
iana portlist update.

Unbound 1.5.8

Download:: unbound-1.5.8.tar.gz | sha1 | sha256 | pgp sig
Date:: 02 Mar, 2016

Features

ip-transparent option for FreeBSD with IP_BINDANY socket option.
insecure-lan-zones: yesno config option, patch from Dag-Erling Smørgrav.
RR Type CSYNC support RFC 7477, in debug printout and config input.
RR Type OPENPGPKEY support (draft-ietf-dane-openpgpkey-07).
Fix #731: tcp-mss, outgoing-tcp-mss options for unbound.conf, patch from Daisuke Higashi.
Support RFC7686: handle ".onion" Special-Use Domain. It is blocked by default, and can be unblocked with "nodefault" localzone config.
ub_ctx_set_stub() function for libunbound to config stub zones.

Bug Fixes

Fix that NSEC3 negative cache is used when there is no salt.
sorted ubsyms.def file with exported libunbound functions.
Print understandable debug log when unusable DS record is seen.
load gost algorithm if digest is seen before key algorithm.
Fix that "make install" fails due to "text file busy" error.
Set IPPROTO_IP6 for ipv6 sockets otherwise invalid argument error.
wait for sendto to drain socket buffers when they are full.
Neater cmdline_verbose increment patch from Edgar Pettijohn.
Made netbsd sendmsg test nonfatal, in case of false positives.
Fix: log message for dnstap socket connection is more clear.
Fix: chown the pidfile if it resides inside the chroot.
Fix cmsg alignment for argument to sendmsg on NetBSD.
Fix that unbound complains about unimplemented IP_PKTINFO for sendmsg on NetBSD (for interface-automatic).
Fix: Swig should not be invoked with CPPFLAGS.
Squelch 'cannot assign requested address' log messages unless verbosity is high, it was spammed after network down.
Fix to simplify empty string checking from Michael McConville.
Fix: Do not log an error when the PID file cannot be chown'ed. Patch from Simon Deziel.
Fix test if -pthreads unused to use better grep for portability.
Fix mingw crosscompile for recent mingw.
Update aclocal, autoconf output with new versions (1.15, 2.4.6).
Define DEFAULT_SOURCE together with BSD_SOURCE when that is defined, for Linux glibc 2.20.
Fixup contrib/aaaa-filter-iterator.patch for moved contents in the source code, so it applies cleanly again. Removed unused variable warnings.
Fix: omit use of escape sequences in echo since they are not portable (unbound-control-setup).
remove NULL-checks before free, patch from Michael McConville.
updated ax_pthread.m4 to version 21 with clang support, this removes a warning from compilation.
OSX portability, detect if sbrk is deprecated.
OSX clang, stop -pthread unused during link stage warnings.
OSX clang new flto check.
iana portlist update.

Unbound 1.5.7

Download:: unbound-1.5.7.tar.gz | sha1 | sha256 | pgp sig
Date:: 10 Dec, 2015

Features

Fix #594: libunbound: optionally use libnettle for crypto. Contributed by Luca Bruno. Added --with-nettle for use with --with-libunbound-only.
Implemented qname minimisation

Bug Fixes

Fix unbound-anchor appears to not fsync root.key.
Fix Document config to block private-address for IPv4 mapped IPv6 addresses.
portability, replace snprintf if return value broken
portability fixes.
detect libexpat without xml_StopParser function.
isblank() compat implementation.
patch from Doug Hogan for SSL_OP_NO_SSLvx options.
Fix nodata proof with empty non-terminals and wildcards.
Fix unbound-control-setup with support for env without HEREDOC bash support.
ACX_SSL_CHECKS no longer adds -ldl needlessly.
Change example.conf: ftp.internic.net to https://www.internic.net
Fix for lenient accept of reverse order DNAME and CNAME.
spelling fixes from Igor Sobrado Delgado.
Fix that malformed EDNS query gets a response without malformed EDNS.
Added assert on rrset cache correctness.
Fix add windows scripts to zip bundle, and fix unbound-control-setup windows batch file.
Fix conf syntax to read files from run dir (on Windows). And fix PCA prompt for unbound-service-install.exe. And add Changelog to windows binary dist. And fixup for unbound-control.
.gitignore for git users.
iana portlist update.
Removed unneeded whitespace from example.conf.
Do not minimise forwarded requests.

Unbound 1.5.6

Download:: unbound-1.5.6.tar.gz | sha1 | sha256 | pgp sig
Date:: 20 Oct, 2015

Features

Default for ssl-port is port 853, the temporary port assignment for secure domain name system traffic. If you used to rely on the older default of port 443, you have to put a clause in unbound.conf for that. The new value is likely going to be the standardised port number for this traffic.
ANY responses include DNAME records if present, as per Evan Hunt's remark in dnsop.

Bug Fixes

Fix segfault in the dns64 module in the formaterror error path.
Fix manpage to suggest using SIGTERM to terminate the server.
iana portlist update.

Unbound 1.5.5

Download:: unbound-1.5.5.tar.gz | sha1 | sha256 | pgp sig
Date:: 06 Oct, 2015

Features

Change default of harden-algo-downgrade to off. This is lenient for algorithm rollover.
Added permit-small-holddown config to debug fast 5011 rollover.
Allow certificate chain files to allow for intermediate certificates. (thanks Daniel Kahn Gillmor)
Enable ECDHE for servers. Where available, use SSL_CTX_set_ecdh_auto() for TLS-wrapped server configurations to enable ECDHE. Otherwise, manually offer curve p256. Client connections should automatically use ECDHE when available. (thanks Daniel Kahn Gillmor)
Fix #699: Feature --enable-pie option to that builds PIE binary.
Fix #700: Feature --enable-relro-now option that enables full read-only relocation.
Fix #702: New IPs for for h.root-servers.net.

Bug Fixes

Fix setting forwarders with unbound-control forward implicitly turns on forward-first.
Fix that reload fails when so-reuseport is yes after changing num-threads.
please afl-gcc (llvm) for uninitialised variable warning.
Fix mktime in unbound-anchor not using UTC.
Fix 5011 anchor update timer after reload.
5011 implementation does not insist on all algorithms, when harden-algo-downgrade is turned off.
Document in the manual more text about configuring locally served zones.
Document that local-zone nodefault matches exactly and transparent can be used to release a subzone.
Fix that configure script does not detect LibreSSL 2.2.2
Fix deadlock for local data add and zone add when unbound-control list_local_data printout is interrupted.
Fix get PY_MAJOR_VERSION failure at configure for python 2.4 to 2.6.
changed windows setup compression to be more transparent.
Fix config globbed include chroot treatment, this fixes reload of globs (patch from Dag-Erling Smørgrav).
Fix ub_ctx_set_fwd() return value mishandled on windows.
Fix minor error in unbound.conf.5.in.
Fix unbound.conf(5) access-control description for precedence and default.
Fix unbound-control flush that does not succeed in removing data.
MAX_TARGET_COUNT increased to 64, to fix up sporadic resolution failures.
iana portlist update.

Unbound 1.5.4

Download:: unbound-1.5.4.tar.gz | sha1 | sha256 | pgp sig
Date:: 09 Jul, 2015

Features

Fix #644: harden-algo-downgrade option, if turned off, fixes the reported excessive validation failure when multiple algorithms are present. If set to 'no', it allows the weakest algorithm to validate the zone.
stats reports tcp usage, of incoming-num-tcp buffers.
contrib/unbound_smf22.tar.gz: Solaris SMF installation/removal scripts. Contributed by Yuri Voinov.
Add ip-transparent config option for bind to non-local addresses.
Synthesize ANY responses from cache. Does not search exhaustively, but MX,A,AAAA,SOA,NS also CNAME.
unbound-control list_insecure command shows the negative trust anchors currently configured, patch from Jelte Jansen.
ratelimit feature, ratelimit: 1000, can be used to turn it on. It ratelimits recursion effort per zone. For particular names you can configure exceptions in unbound.conf.
Ratelimit does not apply to prefetched queries, and ratelimit-factor is default 10. Repeated normal queries get resolved and with prefetch stay in the cache.
unbound-control ratelimit_list lists high rate domains.
caps-whitelist in unbound.conf allows whitelist of loadbalancers that cannot work with caps-for-id or its fallback.
RFC 7553 RR type URI support, is now enabled by default.
cache-max-negative-ttl config option, default 3600.
Add local-zone type inform_deny, that logs query and drops answer.

Bug Fixes

Unbound exits with a fatal error when the auto-trust-anchor-file fails to be writable. This is seconds after startup. You can load a readonly auto-trust-anchor-file with trust-anchor-file. The file has to be writable to notice the trust anchor change, without it, a trust anchor change will be unnoticed and the system will then become inoperable.
DLV is going to be decommissioned. Advice to stop using it, and put text in the example configuration and man page to that effect.
Patch from Brad Smith that syncs compat/getentropy_linux with OpenBSD's version (2015-03-04).
0x20 fallback improved: servfail responses do not count as missing comparisons (except if all responses are errors), inability to find nameservers does not fail equality comparisons, many nameservers does not try to compare more than max-sent-count, parse failures start 0x20 fallback procedure.
store caps_response with best response in case downgrade response happens to be the last one.
Document that incoming-num-tcp increase is good for large servers.
Fix lintian warning in unbound-checkconf man page (from Andreas Schulze).
Updated default keylength in unbound-control-setup to 3k.
Fixup compile on cygwin, more portable openssl thread id.
Use reallocarray for integer overflow protection, patch submitted by Loganaden Velvindron.
Fixed to add integer overflow checks on allocation (defense in depth).
Fix segfault on user not found at startup (from Maciej Soltysiak).
Fix that libunbound(3) recommends deprecated CRYPTO_set_id_callback.
If unknown trust anchor algorithm, and libressl is used, error message encourages upgrade of the libressl package.
rename ldns subdirectory to sldns to avoid name collision.
Fix interface-automatic broken in the presence of asymmetric routing.
Libunbound skips dos-line-endings from etc/hosts.
Fix crash in dnstap: Do not try to log TCP responses after timeout.
Fix that get_option for cache-sizes does not print double newline.
Fix that ssl handshake fails when using unix socket because dh size is too small.
libunbound python3 related fixes (from Tomas Hozza); Use print_function also for Python2. libunbound examples: produce sorted output. libunbound-Python: libldns is not used anymore. Fix issue with Python 3 mapping of FILE* using file_py3.i from ldns.
Fix leaked dns64prefix configuration string.
Removed contrib/unbound_unixsock.diff, because it has been integrated, use control-interface: /path in unbound.conf.
Change syntax of particular validator error to be easier for machine parse, swap rrset and ip adres info so it looks like: validation failure <www.example.nl. TXT IN>: signature crypto failed from 2001:DB8:7:bba4::53 for <*.example.nl. NSEC IN>
Fix that unparseable error responses are ratelimited.
SOA negative TTL is capped at minimumttl in its rdata section.
Do not free pointers given by getenv.
Fix CNAME corresponding to a DNAME was checked incorrectly and was therefore always synthesized (thanks to Valentin Dietrich). And fix DNAME responses from cache that failed internal chain test.
iana portlist update.

Unbound 1.5.3

Download:: unbound-1.5.3.tar.gz | sha1 | sha256 | pgp sig
Date:: 10 Mar, 2015

Bug Fixes

Fix #647: crash in 1.5.2 because pwd.db no longer accessible after reload.
Fix #645: Portability to Solaris 10, use AF_LOCAL.
Fix #646: Portability to Solaris, -lrt for getentropy_solaris.
Use the getrandom syscall introduced in Linux 3.17 (from Heiner Kallweit).

Unbound 1.5.2

Download:: unbound-1.5.2.tar.gz | sha1 | sha256 | pgp sig
Date:: 19 Feb, 2015

Features

local-zone: example.com inform makes unbound log a message with client IP for queries in that zone. Eg. for finding infected hosts.
patch from Stephane Lapie that adds to the python API, that exposes struct delegpt, and adds the find_delegation function.
Updated contrib warmup.cmd/sh to support two modes - load from pre-defined list of domains or (with filename as argument) load from user-specified list of domains, and updated contrib unbound_cache.sh/cmd to support loading/save/reload cache to/from default path or (with secondary argument) arbitrary path/filename, from Yuri Voinov.
patch for remote control over local sockets, from Dag-Erling Smorgrav, Ilya Bakulin. Use control-interface: /path/sock and control-use-cert: no.
unbound-checkconf -f prints chroot with pidfile path.
infra-cache-min-rtt patch from Florian Riehm, for expected long uplink roundtrip times.

Bug Fixes

config.guess and config.sub update from libtoolize.
getauxval test for ppc64 linux compatibility.
make strip works for unbound-host and unbound-anchor.
print query name when max target count is exceeded.
patch from Stuart Henderson that fixes DESTDIR in unbound-control-setup for installs where config is not in the prefix location.
Fix #634: fix fail to start on Linux LTS 3.14.X, ignores missing IP_MTU_DISCOVER OMIT option (fix from Remi Gacogne).
Patch from Philip Paeps to contrib/unbound_munin_ that uses type ABSOLUTE. Allows munin.conf: [idleserver.example.net] unbound_munin_hits.graph_period minute
Fix pyunbound ord call, portable for python 2 and 3.
Fix unintended use of gcc extension for incomplete enum types, compile with pedantic c99 compliance (from Daniel Dickman).
Fix pyunbound byte string representation for python3.
Fix 0x20 capsforid fallback to omit gratuitous NS and additional section changes.
Fix validation failure in case upstream forwarder (ISC BIND) does not have the same trust anchors and decides to insert unsigned NS record in authority section.
Fix scrubber with harden-glue turned off to reject NS (and other not-address) records.
iana portlist update.
Fix doc/example.conf.in: unnecessary whitespace.

Unbound 1.5.1

Download:: unbound-1.5.1.tar.gz | sha1 | sha256 | pgp sig
Date:: 08 Dec, 2014

Features

Patch from Stephane Lapie for ASAHI Net that implements aaaa-filter, added to contrib/aaaa-filter-iterator.patch.

Bug Fixes

Fix that CD flag disables DNS64 processing, returning the DNSSEC signed AAAA denial.
Fix compat/getentropy_win.c check if CryptGenRandom works and no immediate exit on windows.
Fix crash on multiple thread random usage on systems without arc4random.
Fix log at high verbosity and memory allocation failure.
Fix libunbound undefined symbol errors for main.
Patch from Robert Edmonds to build pyunbound python module differently. No versioninfo, with -shared and without $(LIBS).
Patch from Robert Edmonds fixes hyphens in unbound-anchor man page.
Removed 'increased limit open files' log message that is written to console. It is only written on verbosity 4 and higher. This keeps system bootup console cleaner.
Patch from James Raftery, always print stats for rcodes 0..5.
Fix SSL_CTX_load_verify_locations return code not properly checked.
Fix makefile for build from noexec source tree.
Add include to getentropy_linux.c, fixing debian build.
Fix that unbound fails to build on AArch64, protects getentropy compat code from calling sysctl if it is has been removed.
Fix CVE-2014-8602: denial of service by making resolver chase endless series of delegations.

Unbound 1.5.0

Download:: unbound-1.5.0.tar.gz | sha1 | sha256 | pgp sig
Date:: 18 Nov, 2014

Features

This release has DNS64, DNSTAP, better random numbers and ub_ctx_add_ta_autr(), num.query.tcpout=value, flush_negative, unblock-lan-zones conf.
C.ROOT-SERVERS.NET has an IPv6 address, and we updated the root hints (patch from Anand Buddhdev).
Patch from Hannes Frederic Sowa for Linux 3.15 fragmentation option for DNS fragmentation defense.
unbound-control stats prints num.query.tcpout with number of TCP outgoing queries made in the previous statistics interval.
Patch from Jeremie Courreges-Anglas to use arc4random_uniform if available on the OS, it gets entropy from the OS.
Add unbound-control flush_negative that flushed nxdomains, nodata, and errors from the cache. For dnssec-trigger and NetworkManager, fixes cases where network changes have localdata that was already negatively cached from the previous network.
Contrib windows scripts from Yuri Voinov added to src/contrib: create_unbound_ad_servers.cmd: enters anti-ad server lists. unbound_cache.cmd: saves and loads the cache. Also warmup.cmd (and .sh): warm up the DNS cache with your MRU domains.
Added unbound-control-setup.cmd from Yuri Voinov to the windows unbound distribution set. It requires openssl installed in %PATH%.
Implement draft-ietf-dnsop-rfc6598-rfc6303-01.
Feature, unblock-lan-zones: yesno that you can use to make unbound perform 10.0.0.0/8 and other reverse lookups normally, for use if unbound is running service for localhost on localhost.
unbound-host -D enabled dnssec and reads root trust anchor from the default root key file that was compiled in.
Add AAAA for B root server to default root hints.
unbound-control status reports if so-reuseport was successful.
so-reuseport is available on BSDs(such as FreeBSD 10) and OS/X.
arc4random in compat/ and getentropy, explicit_bzero, chacha for dependencies, from OpenBSD. arc4_lock and sha512 in compat. This makes arc4random available on all platforms, except when compiled with LIBNSS (it uses libNSS crypto random).
Patch from Dag-Erling Smorgrav that implements that: unbound -dd does not fork in the background and also logs to stderr.
DNS64 from Viagenie (BSD Licensed), written by Simon Perrault. Initial commit of the patch from the FreeBSD base (with its fixes). This adds a module (for module-config in unbound.conf) dns64 that performs DNS64 processing, see README.DNS64.
Patch add msg, rrset, infra and key cache sizes to stats command from Maciej Soltysiak.
DNSTAP support, with a patch from Farsight Security, written by Robert Edmonds. The --enable-dnstap needs libfstrm and protobuf-c. It is BSD licensed (see dnstap/dnstap.c). Also --with-libfstrm and --with-protobuf-c configure options.
type CDS and CDNSKEY types.
Updated the TCP_BACLOG from 5 to 256, so that the tcp accept queue is longer and more tcp connections can be handled.
Add ub_ctx_add_ta_autr function to add a RFC5011 automatically tracked trust anchor to libunbound.

Bug Fixes

Fix print filename of encompassing config file on read failure.
Patch from Stuart Henderson to build unbound-host man from .1.in.
Fix do_tcp is do-tcp in unbound.conf man page.
Fix unit test failure for systems with different /etc/services.
iana portlist updated.
Fix make test fails on Ubuntu 14.04. Disabled remote-control in testbound scripts.
Documented that dump_requestlist only prints queries from thread 0.
Fix unbound lists if forward zone is secure or insecure with +i annotation in output of list_forwards, also for list_stubs (for NetworkManager integration). And remove ':' from output of stub and forward lists, this is easier to parse.
Fix use unsigned long to print 64bit statistics counters on 64bit systems.
Fix failed prefetch lookup does not remove cached response but delays next prefetch (in lieu of caching a SERVFAIL).
Fix improved logging, the ip address of the error is printed on the same log-line as the error.
Fix explain that do-ip6 disable does not stop AAAA lookups, but it stops the use of the ipv6 transport layer for DNS traffic.
Fix compile with libevent2 on FreeBSD.
Change MAX_SENT_COUNT from 16 to 32 to resolve some cases easier.
Fixup out-of-directory compile with unbound-control-setup.sh.in.
Code cleanup patch from Dag-Erling Smorgrav, with compiler issue fixes from FreeBSD's copy of Unbound, he notes: Generate unbound-control-setup.sh at build time so it respects prefix and sysconfdir from the configure script. Also fix the umask to match the comment, and the comment to match the umask. Add const and static where needed. Use unions instead of playing pointer poker. Move declarations that are needed in multiple source files into a shared header. Move sldns_bgetc() from parse.c to buffer.c where it belongs. Introduce a new header file, worker.h, which declares the callbacks that all workers must define. Remove those declarations from libworker.h. Include the correct headers in the correct places. Fix a few dummy callbacks that don't match their prototype. Fix some casts. Hide the sbrk madness behind #ifdef HAVE_SBRK. Remove a useless printf which breaks reproducible builds. Get rid of CONFIGURE_{TARGET,DATE,BUILD_WITH} now that they're no longer used. Add unbound-control-setup.sh to the list of generated files. The prototype for libworker_event_done_cb() needs to be moved from libunbound/libworker.h to libunbound/worker.h.
Fix caps-for-id fallback, and added fallback attempt when servers drop 0x20 perturbed queries.
Fix segfault or crash upon rotating logfile.
fake-rfc2553 patch (thanks Benjamin Baier).
LibreSSL provides compat items, check for that in configure.
Bail out of unbound-control list_local_zones when ssl write fails.
Fix endian.h include for OpenBSD.
Fix unbound-checkconf -o option should skip verification checks.
Fixup doc/unbound.doxygen to remove obsolete 1.8.7 settings.
Update unbound manpage with more explanation (from Florian Obser).
Fix tcp timer waiting list removal code.
patches to also build with Python 3.x (from Pavel Simerda).
improve python configuration detection to build on Fedora 22.
Fix swig and python examples for Python 3.x.
Fix for mingw compile with openssl-1.0.1i.
Fix create service with service.conf in present directory and auto load it.
Allow tab ws in var length last rdfs (in ldns str2wire).
Fix man page variable substitution bug.
Whitespaces after $ORIGIN are not part of the origin dname (ldns).
$TTL's value starts at position 5 (ldns).
Fix unbound-checkconf check for module config with dns64 module.
Fix unbound capsforid fallback, it ignores TTLs in comparison.
Fix in ldns in unbound, lowercase WKS services.
Fix ctype invocation casts.
Disabled use of SSLv3 in remote-control and ssl-upstream.
Redefine internal minievent symbols to unique symbols that helps linking on platforms where the linker leaks names across modules.
Fix bug where forward or stub addresses with same address but different port number were not tried.

Unbound 1.4.22

Download:: unbound-1.4.22.tar.gz | sha1 | sha256 | pgp sig
Date:: 12 Mar, 2014

Features

separate ldns into core ldns inside ldns/ subdirectory. No more configure --with-ldns is needed and unbound does not rely on libldns.
Accept ip-address: as an alternative for interface: for consistency with nsd.conf syntax.
Fix #536: acl_deny_non_local and refuse_non_local added.
so-reuseport: yesno option to distribute queries evenly over threads on Linux (Thanks Robert Edmonds). Reuseport is attempted, then fallback to without on failure.
delay-close: msec option that delays closing ports for which the UDP reply has timed out. Keeps the port open, only accepts the correct reply. This correct reply is not used, but the port is open so that no port-denied ICMPs are generated.

Bug Fixes

Fix if very high logging (4 or more) segfault on allow_snoop.
Fix Set SO_REUSEADDR so that the wildcard interface and a more specific interface port 53 can be used at the same time, and one of the daemons is unbound.
if configured --with-libunbound-only fix make install.
Patch from Neel Goyal to fix callback in libunbound.
Patch from Neel Goyal to fix async id assignment if callback is called by libunbound in the mesh attach.
Fix compile python plugin without ldns library.
Windows port, adjust %lld to %I64d, and warning in win_event.c.
Fixed +i causes segfault when running with module conf "iterator".
Fix no trustanchor written if filesystem full, fclose checked.
unbound-event.h is installed if you configure --enable-event-api. It contains low-level library calls, that use libevent's event_base and a wireformat return packet in a buffer to perform async resolution in the client's eventloop.
speed up unbound, by reducing lock contention on localzones.lock.
Fix parse (in ldns) of quoted parenthesized text strings.
Detect libevent2 install automatically by configure and fixup link with lib/event2 subdir.
License change "Regents" to "Copyright holder", matching the BSD license on opensource.org.
Fix parse of #553(NSD) string in sldns, quotes without spaces.
Be lenient when a NSEC NameError response with RCODE=NXDOMAIN is received. This is okay according 4035, but not after revising existence in 4592. NSEC empty non-terminals exist and thus the RCODE should have been NOERROR. If this occurs, and the RRsets are secure, we set the RCODE to NOERROR and the security status of the response is also considered secure.
iana portlist updated.
contrib/cacti plugin did not report SERVFAIL rcodes because of spelling. Patch from Chris Coates.

Unbound 1.4.21

Download:: unbound-1.4.21.tar.gz | sha1 | sha256 | pgp sig
Date:: 10 Sep, 2013

Features

Implement max-udp-size config option, default 4096 (thanks Daisuke Higashi), with fix #524 for nonEDNS0 queries.
add unbound-control insecure_add and insecure_remove for the administration of negative trust anchors.
install copy of unbound-control.8 man page for unbound-control-setup.
code improve for minimal responses, small speed increase.
max include of 100.000 files (depth and globbed at one time). This is to preserve system memory in bug cases, or endless cases.
unbound.h header file has UNBOUND_VERSION_MAJOR define.
get_option, set_option, unbound-checkconf -o and libunbound getoption() and setoption() support cache-min-ttl and cache-max-ttl. Also log-time-ascii, python-script, val-sig-skew-min and val-sig-skew-max. log-time-ascii takes effect immediately. The others are mostly useful for libunbound users.
configure --disable-flto option (from Robert Edmonds).
streamtcp man page, contributed by Tomas Hozza.
Make reverse zones easier by documenting the nodefault statements commented-out in the example config file.

Bug Fixes

committed libunbound version 4:1:2 for binary API updated in 1.4.20
Fix for 2038, with time_t instead of uint32_t.
Fix resolve of names that use a mix of public and private addresses.
Fix endianness detection, revert to older lookup3.c detection and put new detect lines after previous tests, to avoid regressions but allow new detections to succeed. And add detection for machine/endian.h to it.
Fix queries leaking up for stubs and forwards, if the configured nameservers all fail to answer.
unbound-anchor review: BIO_write can return 0 successfully if it has successfully appended a zero length string.
Fix so that for a configuration line of include: "*.conf" it is not an error if there are no files matching the glob pattern.
own implementation of compat/snprintf.c.
pick program name (0th argument) as syslog identity.
Fixup snprintf return value usage, fixed libunbound_get_option.
Robust checks on dname validity from rdata for dname compare.
iana portlist update.
Fix round-robin doesn't work with some Windows clients (from Ilya Bakulin).
use on non-initialised values on socket bind failures.
use-after-free in out-of-memory handling code (thanks Jake Montgomery).
Explain bogus and secure flags in libunbound more.
Update acx_pthreads.m4 to ax_pthreads.4 (2013-03-29), and apply patch to it to not fail when -Werror is also specified, from the autoconf-archives.
Fixup manpage syntax.
Fix for const string literals in C++ for libunbound, from Karel Slany.
Squelch sendto-permission denied errors when the network is not connected, to avoid spamming syslog.
libunbound documentation on how to avoid openssl race conditions.
NSS returned arrays out of setup function to be statics.
dnssec lameness detection for answers that are improper.
ub_ctx_delete may hang in some scenarios (libunbound).
Errors found by static analysis from Tomas Hozza(redhat).

Unbound 1.4.20

Download:: unbound-1.4.20.tar.gz | sha1 | sha256 | pgp sig
Date:: 21 Mar, 2013

Features

add libunbound.ttl at end of result structure, version bump for libunbound. Code compiled with 1.4.19 is binary compatible with the 1.4.20 library. If code uses the ttl it needs the 1.4.20 version.

Bug Fixes

Change of D.ROOT-SERVERS.NET A address in default root hints.
Fix openssl lock free on exit (reported by Robert Fleischman).
unbound-anchors checks the emailAddress of the signer of the root.xml file, default is dnssec@iana.org. It also checks that the signer has the correct key usage for a digital signature.
printout name of zone with duplicate fwd and hint errors.
includes and have_ssl fixes for nss.
detect endianness in lookup3 on BSD.
iana portlist updated.

Unbound 1.4.19

Download:: unbound-1.4.19.tar.gz | sha1 | sha256 | pgp sig
Date:: 12 Dec, 2012

Features

RFC6725 deprecates RSAMD5: this DNSKEY algorithm is disabled. The contrib/patch_rsamd5_enable.diff patch enables RSAMD5 validation otherwise it is treated as insecure. The MD5 hash is considered weak for some purposes, if you want to sign your zone, then RSASHA256 is an uncontested hash.
unbound-control -q option is quiet, patch from Mariano Absatz.
include: directive in config file accepts wildcards. Patch from Paul Wouters. Suggested use: include: "/etc/unbound.d/conf.d/*"

Bug Fixes

Fix openssl race condition, initializes openssl locks, reported by Einar Lonn and Patrik Wallstrom.
Improved forward-first and stub-first documentation.
Fix that enables modules to register twice for the same serviced_query, without race conditions or administration issues.
Fix forward-first option where it sets the RD flag wrongly.
added manpage links for libunbound calls (Thanks Paul Wouters).
Add documentation to libunbound for default nonuse of resolv.conf.
Fix timeouts so that when a server has been offline for a while and is probed to see it works, it becomes fully available for server selection again.
Fallback to 1472 and 1232, one fragment size without headers.
Nicer comments outgoing-port-avoid, thanks Stu.
chdir to / after chroot call (suggested by Camiel Dobbelaar).
updated contrib/unbound.spec, patch from Valentin Bud.
ignore trusted-keys globs that have no files (from Paul Wouters).
fix text in unbound-anchor man page.
fix build of pythonmod in objdir (thanks Jakob Schlyter).
make clean and makerealclean remove generated python and docs.
Fix validation for responses with both CNAME and wildcard expanded CNAME records in answer section.
Fix unbound-anchor segfault if EDNS is blocked.
Fix unbound-control forward disables configured stubs below it.
Fix python example0.
iana portlist updated.

Unbound 1.4.18

Download:: unbound-1.4.18.tar.gz | sha1 | sha256 | pgp sig
Date:: 02 Aug, 2012

Features

implement log-time-ascii on windows.
--with-libunbound-only build option, only builds the library and not the daemon and other tools.
--with-nss build option (for now, --with-libunbound-only), uses libNSS for crypto operations.
disable RSAMD5 if in FIPS mode (for openssl and for libnss).
Add flush_bogus option for unbound-control.

Bug Fixes

Fix libunbound report of errors when in background mode.
fix bogus nodata cname chain not reported as bogus by validator, (Thanks Peter van Dijk).
Fix for ACX_CHECK_COMPILER_FLAG from configure.ac, if CFLAGS is specified at configure time then '-g -O2' is not appended to CFLAGS, so that the user can override them.
FIPS_mode openssl does not use arc4random but RAND_pseudo_bytes.
fix missing break for GOST DS hash function.
implemented forward_first for the root.
code review: return value of cache_store can be ignored for better performance in out of memory conditions.
patch for unbound_munin_ script to handle arbitrary thread count by Sven Ulland.
Fix validation of qtype DS queries that result in no data for non-optout NSEC3 zones.
fix edns-buffer-size and msg-buffer-size manpage documentation.
fix error handling of alloc failure during rrsig verification.
The key-cache bad key ttl is now 60 seconds.
fix crash on assert in mesh_state_attachment. Fixes DS NS search to not generate duplicate sub queries.
silence warning from swig-generated code (md set but not used in swig initmodule, due to ifdefs in swig-generated code).
Fix debian-bugs-658021: Please enable hardened build flags.
update iana ports list

Unbound 1.4.17

Download:: unbound-1.4.17.tar.gz | sha1 | sha256 | pgp sig
Date:: 24 May, 2012

Features

unbound-control forward_add, forward_remove, stub_add, stub_remove can modify stubs and forwards for running unbound they can also add and remove domain-insecure for the zone. This is to support reconfiguration of a DNSSEC validator on a computer that changes networks and has to enable new network config for the new location.
new approach to NS fetches for DS lookup that works with cornercases, and is more robust and considers forwarders.
contrib/validation-reporter follows rotated log file (patch from Augie Schwer).
Applied patch from Daisuke HIGASHI for rrset-roundrobin and minimal-responses features (new options, enable in unbound.conf to use).
ECDSA support (RFC 6605) by default. Use --disable-ecdsa for older openssl.
Patch for access to full DNS packet data in unbound python module from Ondrej Mikle.
forward-first option. Tries without forward if a query fails. Also stub-first option that is similar.

Bug Fixes

Fix possible uninitialised variable in windows pipe implementation.
Fix alignment problem in util/random on sparc64/freebsd.
Fix for accept spinning reported by OpenBSD.
Fix validation of nodata for DS query in NSEC zones, reported by Ondrej Mikle.
Fix that setusercontext was called too late (thanks Bjorn Ketelaars).
Fix --with-chroot-dir not honoured by configure.
Fix that Makefile depends on pythonmod headers even using --without-pythonmodule.
Fix to locate nameservers for DS lookup with NS fetches.
Applied line-buffer patch from Augie Schwer to validation.reporter.sh.
flush_infra cleans timeouted servers from the cache too.
Fix from code review, if EINPROGRESS not defined chain if statement differently.
Fix windows port to check registry for config file location for unbound-control.exe, and unbound-checkconf.exe.
Fix to squelch 'network unreachable' errors from tcp connect in logs, high verbosity will show them.
Fix prefetch and sticky NS ghost domain. It picks nameservers that 'would be valid in the future', and if this makes the NS timeout, it updates that NS by asking delegation from the parent again. If child NS has longer TTL, that TTL does not get refreshed from the lookup to the child nameserver.
RT#2955 Fix for cygwin compilation.
Slightly smaller critical region in one case in infra cache.
Fix timeouts to keep track of query type, A, AAAA and other, if another has caused timeout blacklist, different type can still probe.
unit test fix for nomem_cnametopos.rpl race condition.
fix memory leak in errorcase for DSA signatures.
workaround for openssl 0.9.8 ecdsa sha2 and evp problem.
fix for windows, rename() is not posix compliant on windows.
iana portlist updated

Unbound 1.4.16

Download:: unbound-1.4.16.tar.gz | sha1 | sha256 | pgp sig
Date:: 02 Feb, 2012

Features

applied patch to support outgoing-interface with ub_ctx_set_option.

Bug Fixes

Fix validation failures (like: validation failure xx: no NSEC3 closest encloser from yy for DS zz. while building chain of trust, because of a bug in the TTL-fix in 1.4.15, it picked the wrong rdata for an NSEC3. Now it does not change rdata, and fixes TTL.
Fix version-number in libtool to be version-info so it produces libunbound.so.2 like it should.
Fixes for port to OpenIndiana OS with gcc 4.6.
Fix to write key files completely to a temporary file, and if that succeeds, replace the real key file. So failures leave a useful file.

Unbound 1.4.15

Download:: unbound-1.4.15.tar.gz | sha1 | sha256 | pgp sig
Date:: 26 Jan, 2012

Bug Fixes

Fix for memory leak (about 20 bytes when a tcp or udp send operation towards authority servers failed, takes about 50.000 such failures to leak one Mb, such failures are also usually logged), reported by Robert Fleischmann.
Fix to randomize hash function, based on 28c3 congress, reported by Peter van Dijk.
unbound reports wrong TTL in reply, it reports a TTL that would be permissible by the RFCs but it is not the TTL in the cache.
add ub_version() call to libunbound. API version increase, with (binary) backwards compatibility for the previous version.
Fix bug where canonical_compare of RRSIG did not downcase the signer-name. This is mostly harmless because RRSIGs do not have to be sorted in canonical order, usually.
uninitialised variable in reprobe for rtt blocked domains fixed.
iana portlist updated.

Unbound 1.4.14

Download:: unbound-1.4.14.tar.gz | sha1 | sha256 | pgp sig
Date:: 19 Dec, 2011

Features

Makefile changed for BSD make compatibility.
dns over ssl support as a client, ssl-upstream yes turns it on. It performs an SSL transaction for every DNS query.
dns over ssl support as a server, ssl-service-pem and ssl-service-key files can be given and then TCP queries are serviced wrapped in SSL.
lame-ttl and lame-size options no longer exist, it is integrated with the host info. They are ignored (with verbose warning) if encountered to keep the config file backwards compatible.
TCP-upstream calculates tcp-ping so server selection works if there are alternatives.
Unbound probes at EDNS1480 if there an EDNS0 timeout.

Bug Fixes

Fix for VU#209659 CVE-2011-4528: Unbound denial of service vulnerabilities from nonstandard redirection and denial of existence http://www.unbound.net/downloads/CVE-2011-4528.txt
Fix for tcp-upstream and ssl-upstream for if a laptop sleeps, causes SERVFAILs. Also fixed for UDP (but less likely).
Fix quartile time estimate, it was too low, (thanks Jan Komissar).
Fix double free in unbound-host, reported by Steve Grubb.
fix -flto detection on Lion for llvm-gcc.
Infra cache stores information about ping and lameness per IP, zone.
Fix resolve of partners.extranet.microsoft.com with a fix for the server selection for choosing out of a (particular) list of bad choices.
Fix make_new_space function so that the incoming query is not overwritten if a jostled out query causes a waiting query to be resumed that then fails and sends an error message. (Thanks to Matthew Lee).
fix unbound-anchor for broken strptime on OSX lion, detected in configure.
Detect if GOST really works, openssl1.0 on OSX fails.
Implement ipv6%interface notation for scope_id usage.
better documentation for inform_super (Thanks Yang Zhe).
Fix for out-of-memory condition in libunbound (thanks Robert Fleischman).
Fix --enable-allsymbols, it depended on link specifics of the target platform, or fptr_wlist assertion failures could occur. The feature is disabled on windows.
updated contrib/unbound_munin_ to family=auto so that it works with munin-node-configure automatically (if installed as /usr/local/share/munin/plugins/unbound_munin_ ).
unbound.exe -w windows option for start and stop service.
Fix classification of NS set in answer section, where there is a parent-child server, and the answer has the AA flag for dir.slb.com. Thanks to Amanda Constant from Secure64.
accept patch from Steve Snyder that comments out unused functions in lookup3.c.
fix various compiler warnings (reported by Paul Wouters).
max sent count. EDNS1480 only for rtt < 5000. No promiscuous fetch if sentcount > 3, stop query if sentcount > 16. Count is reset when referral or CNAME happens. This makes unbound better at managing large NS sets, they are explored when there is continued interest (in the form of queries).
remove uninit warning from cachedump code.
Fix parse error on negative SOA RRSIGs if badly ordered in the packet.
fix infra cache comparison.
Fix to constrain signer_name to be a parent of the lookupname.
robust checks for next-closer NSEC3s.
iana portlist updated.

Unbound 1.4.13

Download:: unbound-1.4.13.tar.gz | sha1 | sha256 | pgp sig
Date:: 15 Sep, 2011

Features

Note that Unbound implements RFC6303 (since version 1.4.7).
tcp-upstream yes/no option (works with set_option) for tunnels.
The format of answers to the qtype ANY with a CNAME have changed, so that there can be proper validated DNSSEC answers for them. This is for queries with qtype ANY where the domain name has a CNAME. Now an answer is returned, where before it resulted in SERVFAIL due to validation failure. When DNSSEC validation is disabled, the contents of the response have changed: the CNAME is not followed, and the correct contents of the RRsets at the initial name are included (where previously only partial contents of the initial names could have been included but the CNAME was followed). The qtype ANY is a query for debug where the resolver is to fill in relevant data that happens to be at hand from the cache.

Bug Fixes

Fix validation of qtype ANY responses with CNAMEs (thanks Cathy Zhang and Luo Ce). Unbound responds with the RR types that are available at the name for qtype ANY and validates those RR types. It does not test for completeness (i.e. with NSEC or NSEC3 query), and it does not follow the CNAME or DNAME to another name (with even more data for the already large response)
Documented the options that work with control set_option command.
Fix that internally, CNAMEs with NXDOMAIN have that as rcode.
Fix validation of . DS query.
Fix wildcard expansion no-data reply under an optout NSEC3 zone is validated as insecure, reported by Jia Li (lijia cnnic.cn).
Fix python site-packages path to /usr/lib64.
fix memory and fd leak after out-of-memory condition.
patch from Tom Hendrikx fixes load of python modules.
Applied patch from Karel Slany that fixes a memory leak in the unbound python module, in string conversions.
Fix num-threads 0 does not segfault, reported by Simon Deziel.
fix autoconf 2.68 warnings
iana portlist updated

Unbound 1.4.12

Download:: unbound-1.4.12.tar.gz | sha1 | sha256 | pgp sig
Date:: 14 Jul, 2011

Bug Fixes

removed ldns-src tarball inside the unbound tarball.
fix that id bits of other query may leak out under conditions
fix replyaddr count wrong after jostled queries, which leads to eventual starvation where the daemon has no replyaddrs left to use.
fix that the listening socket is not closed when too many remote control connections are made at the same time.
version number in example config file.
fix that --enable-static-exe does not complain about it unknown.
iana portlist updated

Unbound 1.4.11

Download:: unbound-1.4.11.tar.gz | sha1 | sha256 | pgp sig
Date:: 30 Jun, 2011

Features

log-queries: yesno option, default is no, prints querylog.
ignore-cd-flag: yesno to provide dnssec to legacy servers.
Use -flto compiler flag for link time optimization, if supported.
unbound-control has version number in the header, and uses port number registered with IANA, 8953.

Bug Fixes

Fix Makefile for U in environment, since wrong U is more common than deansification necessity.
defense in depth against the assertion failure bug fixed in 1.4.10, an error is printed to log instead of an assertion failure.
--enable-allsymbols option links all binaries to libunbound and reduces install size significantly.
Fix TTL of SOA so negative TTL is separately cached from normal TTL.
configure created with newer autoconf 2.66.
Fix that configure checks for ldns_get_random presence.
queries with CD flag set cause DNSSEC validation, but the answer is not withheld if it is bogus. Thus, unbound will retry if it is bad and curb the TTL if it is bad, thus protecting the cache for use by downstream validators.
val-override-date: -1 ignores dates entirely, for NTP usage.
harden-below-nxdomain: changed so that it activates when the cached nxdomain is dnssec secure. This avoids backwards incompatibility because those old servers do not have dnssec.
statistics-interval prints the number of jostled queries to log.
IPv6 service address for d.root-servers.net (2001:500:2D::D).
updated ldns tarball to 1.6.10rc2 snapshot
iana portlist updated.

Unbound 1.4.10

Download:: unbound-1.4.10.tar.gz | sha1 | sha256 | pgp sig
Date:: 25 May, 2011

Bug Fixes

Fix assertion failure when unbound generates an empty error reply in response to a query, CVE-2011-1922 VU#531342.

Unbound 1.4.9

Download:: unbound-1.4.9.tar.gz | sha1 | sha256 | pgp sig
Date:: 24 Mar, 2011

Bug Fixes

Added explicit note on unbound-anchor usage: Please note usage of unbound-anchor root anchor is at your own risk and under the terms of our LICENSE (see that file in the source).
Fix remove private address does not throw away entire response.
Fix, time.elapsed variable not reset with stats_noreset.
Fix no ADflag for NXDOMAIN in NSEC3 optout. And wildcard in optout.
give config parse error for multiple names on a stub or forward zone.
updated ldns tarball to 1.6.9(snapshot).
iana portlist updated.

Unbound 1.4.8

Download:: unbound-1.4.8.tar.gz | sha1 | sha256 | pgp sig
Date:: 24 Jan, 2011

Features

harden-below-nxdomain config option, default off (because very old software may be incompatible). We could enable it by default in the future. From draft-vixie-dnsext-resimprove-00.
typetransparent localzone: does not block other RR types.
so-sndbuf option for very busy servers, a bit like so-rcvbuf.

Bug Fixes

Fix so a changed NS RRset does not get moved name stuck on old server, for type NS the TTL is not increased.
Fix prefetch so it does not get stuck on old server for moved names.
Fix insecure CNAME sequence marked as secure, reported by Bert Hubert.
faster lruhash get_mem routine.
remove ITAR scripts from contrib, the service is discontinued, use the root.
Fix in infra cache that could cause rto larger than TOP_TIMEOUT kept.
algorithm compromise protection using the algorithms signalled in the DS record. Also, trust anchors, DLV, and RFC5011 receive this, and thus, if you have multiple algorithms in your trust-anchor-file then it will now behave different than before. Also, 5011 rollover for algorithms needs to be double-signature until the old algorithm is revoked.
squelch 'tcp connect: bla' in logfile, (set verbosity 2 to see them)
fix validation in this case: CNAME to nodata for co-hosted opt-in NSEC3 insecure delegation, was bogus, fixed to be insecure.
Fix our 'BDS' license (typo reported by Xavier Belanger).
print address when socket creation fails.
Fix storage of EDNS failures in the infra cache.
silence 'tcp connect: broken pipe' and 'net down' at low verbosity.
unbound-anchor compiles with openssl 0.9.7.
Be lenient and accept imgw.pl malformed packet (like BIND).
the included ldns tarball is updated (to 1.6.8)
iana portlist updated.

Unbound 1.4.7

Download:: unbound-1.4.7.tar.gz | sha1 | sha256 | pgp sig
Date:: 08 Nov, 2010

Features

unbound-anchor app, unbound requires libexpat (xml parser library). It creates or updates a root.key file. Use it before you start the validator (e.g. at system boot time).
dump_infra and flush_infra commands for unbound-control.

Bug Fixes

GOST code enabled by default (RFC 5933).
Configure detects libev-4.00.
do not synthesize a CNAME message from cache for qtype DS.
Use central entropy to seed threads.
Change the rtt used to probe EDNS-timeout hosts to 1000 msec.
Fix validation failure for parent and child on same server with an insecure childzone and a CNAME from parent to child.
Change of timeout code. No more lost and backoff in blockage. At 12sec timeout (and at least 2x lost before) one probe per IP is allowed only. At 120sec, the IP is blocked. After 15min, a 120sec entry has a single retry packet.
no timeout backoff if meanwhile a query succeeded.
Configure errors if ldns is not found.
Windows 7 fix for the installer.
Fix bug where fallback_tcp causes wrong roundtrip and edns observation to be noted in cache. Fix bug where EDNSprobe halted exponential backoff if EDNS status unknown.
interface automatic works for some people with ip6 disabled. Therefore the error check is removed, so they can use the option.
Fix TCP so it uses a random outgoing-interface.
Fix bug when DLV below a trust-anchor that uses NSEC3 optout where the zone has a secure delegation hosted on the same server did not verify as secure (it was insecure by mistake).
Fix alloc_reg_release for longer uptime in out of memory conditions.
in example.conf show correct ipv4 link-local 169.254/16.
compliance with draft-ietf-dnsop-default-local-zones-14, removed reverse ipv6 orchid prefix from builtin list.
Algorithm rollover operational reality intrudes, for trust-anchor and 5011-store, if one key matches it's good enough.
Fix reported validation error in out of memory condition.
Abide RFC5155 section 9.2: no AD flag for replies with NSEC3 optout.
increased mesh-max-activation from 1000 to 3000 for crazy domains like _tcp.slb.com with 262 servers.
Fix for cannot access stub zones until the root is primed.
openbsd-lint fixes
Fix resolution of rs.ripe.net artifacts with 0x20. Delegpt structures checked for duplicates always. No more nameserver lookups generated when depth is full anyway.
Fix, configure does not respect CFLAGS on Solaris. Pass CFLAGS="-xO4 -xtarget=generic" on the configure command line if use sun-cc, but some systems need different flags.
Fix acx_nlnetlabs.m4 configure output for autoconf-2.66 AS_TR_CPP changes, uses m4_bpatsubst now.
make test (or make check) should be more portable and run the unit test and testbound scripts. (make longtest has special requirements).
More pleasant remote control command parsing.
Fix name of rrset printed that failed validation.
Return NXDOMAIN after chain of CNAMEs ends at name-not-found.
Fix validation in case a trust anchor enters into a zone with unsupported algorithms.
iana portlist updated.
updated ldns tarball.

Unbound 1.4.6

Download:: unbound-1.4.6.tar.gz | sha1 | sha256 | pgp sig
Date:: 03 Aug, 2010

Features

Builtin root hints contain AAAA for I.ROOT-SERVERS.NET.
unbound.h has extern "C" statement for easier include in c++.
added feature to print configure date, target and options with -h.
added feature to print event backend system details with -h.
(ports and works on Minix 3.1.7). On Minix, add /usr/gnu/bin to PATH, use ./configure AR=/usr/gnu/bin/gar and gmake.
GOST enabled if SSL is recent and ldns has GOST enabled too.

Bug Fixes

Fix TCPreply on systems with no writev, if just 1 byte could be sent.
Fix to use one pointer less for iterator query state store_parent_NS.
Max referral count from 30 to 130, because 128 one character domains is valid DNS.
added documentation for the histogram printout to syslog.
Fix assertion failure reported by Kai Storbeck from XS4ALL, the assertion was wrong.
updated ldns tarball.
iana portlist updated.
Unbound reports libev or libevent correctly in logs in verbose mode.
Fix handling of corner case reply from lame server, follows rfc2308. It could lead to a nodata reply getting into the cache if the search for a non-lame server turned up other misconfigured servers.
Fix jostle list bug found by Vince (luoce at cnnic), it caused the qps in overload situations to be about 5 qps for the class of shortly serviced queries. The capacity of the resolver is then about (numqueriesperthread / 2) / (average time for such long queries) qps for long queries. And about (numqueriesperthread / 2)/(jostletimeout in whole seconds) qps for short queries, per thread.
Fix the max number of reply-address count to be applied for duplicate queries, and not for new query list entries. This raises the memory usage to a max of (16+1)*numqueriesperthread reply addresses.
Fix RFC4035 compliance with 2.2 statement that the DNSKEY at apex must be signed with all algorithms from the DS rrset at the parent. This is now checked and becomes bogus if not.
Fix validation of qtype DNSKEY when a key-cache entry exists but no rr-cache entry is used (it expired or prefetch), it then goes back up to the DS or trust-anchor to validate the DNSKEY.
log if a server is skipped because it is on the donotquery list, at verbosity 4, to enable diagnosis why no queries to 127.0.0.1.
failure to chown the pidfile is not fatal any more.
Neat function prototypes, unshadowed local declarations.
Fix integer underflow in prefetch ttl creation from cache. This fixes a potential negative prefetch ttl.
Changed the defaults for num-queries-per-thread/outgoing-range. For builtin-select: 512/960, for libevent 1024/4096 and for windows 24/48 (because of win api). This makes the ratio this way to improve resilience under heavy load. For high performance, use libevent and possibly higher numbers.

Unbound 1.4.5

Download:: unbound-1.4.5.tar.gz | sha1 | sha256 | pgp sig
Date:: 03 Jun, 2010

Features

unbound-control get_option domain-insecure shows config file items.
Autotrust anchor file can be initialized with a ZSK key as well (if the domain's DNSKEY set is signed with that ZSK).
Conforms to draft-ietf-dnsop-default-local-zones-13. Added default reverse lookup blocks for IPv4 test nets 100.51.198.in-addr.arpa, 113.0.203.in-addr.arpa and Orchid prefix 0.1.1.0.0.2.ip6.arpa.
Contribution from Migiel de Vos (Surfnet): nagios patch for unbound-host, in contrib/ (in the source tarball). Makes unbound-host suitable for monitoring dnssec(-chain) status.
GOST disabled-by-default, the algorithm number is allocated but the RFC is still has to pass AUTH48 at the IETF.

Bug Fixes

Fix validation failure for qtype ANY caused by a RRSIG parse failure. The validator error message was 'no signatures from ...'.
Squelch log message: sendto failed permission denied for 255.255.255.255, it is visible in VERB_DETAIL (verbosity 2).
Fix fetch from blacklisted dnssec lame servers as last resort. The server's IP address is then given in validator errors as well.
Fix local-zone type redirect that did not use the query name for the answer rrset.
Compile fix using Sun Studio 12 compiler on Solaris 5.9, use CPPFLAGS during configure process.
Fix if libev is installed on the base system (not libevent), detect it from the event.h header file and link with -lev.
Fix configlexer.lex gets config.h, and configyyrename.h added by make, no more double include.
More strict scrubber (Thanks to George Barwood for the idea): NS set must be pertinent to the query.
In 0x20 backoff fix fallback so the number of outstanding queries does not become -1 and block the request. Fixed handling of recursion-lame in combination with 0x20 fallback. Fix so RRsets are compared canonicalized and sorted if the immediate comparison fails, this makes the 0x20 option work around round-robin sites.
Fix retry sequence if prime hints are recursion-lame.
Fix so harden-referral-path does not result in failures due to max-depth. You can increase the max-depth by adding numbers (' 0') after the target-fetch-policy, this increases the depth to which is checked.
Fix detection of GOST support in ldns (reported by Chris Smith).
Fix for dnssec lameness detection to use the key cache.
infra cache entries that are expired are wiped clean. Previously it was possible to not expire host data (if accessed often).
Fix dnssec-missing detection that was turned off by server selection.
Fix spelling error in variable name in parser and lexer.
Fix various compiler warnings from the clang llvm compiler.
Fix comments in iter_utils:dp_is_useless.
EDNS timeout code will not fire if EDNS status already known.
EDNS failure not stored if EDNS status known to work.
Parent-child disagreement approach altered. Older fixes are removed in place of a more exhaustive search for misconfigured data available via the parent of a delegation. This is designed to be throttled by cache entries, with TTL from the parent if possible. Additionally the loop-counter is used. It also tests for NS RRset differences between parent and child. The fetch of misconfigured data should be more reliable and thorough. It should work reliably even with no or only partial data in cache. Data received from the child (as always) is deemed more authoritative than information received from the delegation parent. The search for misconfigured data is not performed normally.
Fix AD flag handling, it could in some cases mistakenly copy the AD flag from upstream servers.
Ignore Z flag in incoming messages too.
alloc_special_obtain out of memory is not a fatal error any more, enabling unbound to continue longer in out of memory conditions.
Parentside names are dispreferred but not said to be dnssec-lame.
Fix parentside and querytargets modulestate, for dump_requestlist.
unbound-control-setup makes keys -rw-r--- so not all users permitted.
libtoolize 2.2.6b, autoconf 2.65 applied to configure.
Fix compile warning if compiled without threads.
iana portlist updated.
included ldns tarball updated.
Fix bug where a long loop could be entered, now cycle detection has a loop-counter and maximum search amount.

Unbound 1.4.4

Download:: unbound-1.4.4.tar.gz | sha1 | sha256 | pgp sig
Date:: 22 Apr, 2010

Features

Experimental ECC-GOST algorithm support, needs openssl-1.0.0 and currently needs ldns from svn trunk. Uses ECC-GOST algorithm number 12 (assigned by IANA). As the RFC is written, we intend to make it optional, because a dependency on openssl-1.0.0 is hard across distributions right now.
unbound-host disables use-syslog from config file so that the config file for the main server can be used more easily.
Include less in config.h and include per code file for ldns, ssl.

Bug Fixes

pkt_dname_tolower could read beyond end of buffer or get into an endless loop, if 0x20 was enabled, and buffers are small or particular broken packets are received.
Fix chain of trust with CNAME at an intermediate step, for the DS processing proof.
Fix validation of queries with wildcard names (*.example).
Fix EDNS probe for .de DNSSEC testbed failure, where the infra cache timeout coincided with a server update, the current EDNS backoff is less sensitive, and does not cache the backoff unless the backoff actually works and the domain is not expecting DNSSEC.
unbound control flushed items are not counted when flushed again.
iana portlist updated.
unbound-checkconf could not parse interface '0.0.0.0@5353', even though unbound itself worked fine.
Fixed random numbers for port, interface and server selection. Removed very small bias.
Refer to the listing in unbound-control man page in the extended statistics entry in the unbound.conf man page.
Fix interface-automatic for OpenBSD: msg.controllen was too small, also assertions on ancillary data buffer.
check for IP_SENDSRCADDR for interface-automatic or IP_PKTINFO.
for NSEC3 check if signatures are cached.
Reordered configure checks so fork and -lnsl -lsocket checks are earlier, and thus later checks benefit from and do not hinder them.
ldns tarball updated.
Fix python use when multithreaded.
Fix solaris python compile.
spelling fix in validation error involving cnames.

Unbound 1.4.3

Download:: unbound-1.4.3.tar.gz | sha1 | sha256 | pgp sig
Date:: 11 Mar, 2010

Bug Fixes

Fix for memory alignment in struct sock_list allocation. This is a remote denial of service vulnerability, as it could make unbound crash on 64bit systems if triggered.
Fix for MacPorts ldns without ssl default, unbound checks if ldns has dnssec functionality and uses the builtin if not.
Fix daemonize on Solaris 10, it did not detach from terminal.

Unbound 1.4.2

Download:: unbound-1.4.2.tar.gz | sha1 | sha256 | pgp sig
Date:: 09 Mar, 2010

Features

unbound-control list_stubs, list_forwards, list_local_zones, list_local_data, log_reopen, set_option and get_option.
libunbound ub_ctx_get_option() added.
--enable-checking: enables assertions but does not look nonproduction.
nicer VERB_DETAIL (verbosity 2, unbound-host -d) output, with nxdomain and nodata distinguished.
prefetch-key option that performs DNSKEY queries earlier in the validation process, and that could halve the latency on DNSSEC queries. It takes some extra processing (CPU, a cache is needed).
prefetch option that prefetches popular queries before they expire.
change unbound-control-setup from 1024(sha1) to 1536(sha256).

Bug Fixes

Re-query pattern changed on validation failure. To protect troubled authority servers, unbound caches a failure for the DNSKEY or DS records for the entire zone, and only retries that 900 seconds later. This implies that only a handful of packets are sent extra to the authority if the zone fails. We made the choice to send out more conservatively, protecting against an aggregate effect more than protecting a single user (from their own folly, perhaps in case of misconfig).
Fix crash in control channel code.
iana portlist updated.
make install depends on make all.
Fix 5011 auto-trust-anchor-file initial read to skip RRSIGs.
ldns tarball updated: long label length syntax error fix, libdl compile fix.
--disable-rpath fixed for libtool not found errors.
Fixup prototype for lexer cleanup in daemon code.
Fix scrubber bug that potentially let NS records through. Reported by Amanda Constant.
Also delete potential poison references from additional.
Fix: no classification of a forwarder as lame, throwaway instead.
More strict DS scrubbing.
No more blacklisting of unresponsive servers, a 2 minute timeout is backed off to.
RD flag not enabled for dnssec-blacklisted tries, unless necessary.
log 'tcp connect: connection timed out' only in high verbosity.
Disregard DNSKEY from authority section for chain of trust. DS records that are irrelevant to a referral scrubbed. Anti-poison.
Check for 'no space left on device' (or other errors) when writing updated autotrust anchors and print errno to log.
Fixup in compat snprintf routine, %f 1.02 and %g support.
include math.h for testbound test compile portability.
Updated url of IANA itar, interim trust anchor repository, in script.
configure test for memcmp portability.
removed warning on format string in validator error log statement.
libtool finish the install of unbound python dynamic library.
Fixup lookup trouble for parent-child domains on the first query.
Fixup ldns detection to also check for header files.
Fix unbound-checkconf for auto-trust-anchor-file present checks.
Fix for parent-child disagreement code which could have trouble when (a) ipv6 was disabled and (b) the TTL for parent and child were different. There were two bugs, the parent-side information is fixed to no longer block lookup of child side information and the iterator is fixed to no longer attempt to get ipv6 when it is not enabled and then give up in failure.
Fixup python documentation (thanks Leo Vandewoestijne).
DNS wireformat max is 255. dname_valid allowed 256 length.
verbose output includes parent-side-address notion for lameness.
documented val-log-level: 2 setting in example.conf and man page.

Unbound 1.4.1

Download:: unbound-1.4.1.tar.gz | sha1 | sha256 | pgp sig
Date:: 17 Dec, 2009

Features

Bind the same interface multiple times at different ports. Use multiple lines with an @port suffix.

Bug Fixes

Fix libtool version to 2 because of why_bogus change in 1.4.0.
fix parse of # without end-of-line at end-of-file.
Fix crash with module-config "iterator".
Fix segfault when unbound-control remove nonexistent local data. And an update of ldns tarball with fix for parse errors generated for domain names like '.example.com'.
Fix for lookup of parent-child disagreement domains, where the parent-side glue works but it does not provide proper NS, A or AAAA for itself, fixing motorcaravanners.eu.
Fix negative cache lookup of closestencloser check of DS type bit.
Fix SOA excluded from negative DS responses. Reported by Hauke Lampe.
Fix that verify_rrsig routine checks expiration last.
on IPv4 UDP turn off DF flag.
Fix qclass=ANY queries, with class IN contents.

Unbound 1.4.0

Download:: unbound-1.4.0.tar.gz | sha1 | sha256 | pgp sig
Date:: 26 Nov, 2009

Features

RFC 5702: RSASHA256 and RSASHA512 support enabled by default. Please use openssl 0.9.8 or later, that provide sha256 and sha512.
included ldns tarball updated (which also enables rsasha256 support).
val-log-level: 2 shows extended error information for validation failures, one line per failure. For example: validation failure <example.com. DNSKEY IN>: signature expired from 192.0.2.4 for trust anchor example.com. while building chain of trust
Made new validator error string available from libunbound for applications. It is in result->why_bogus, a zero-terminated string. unbound-host prints it by default if a result is bogus. Also the errinf is public in module_qstate (for other modules).
retry on DNSSEC failures, query other servers, unbound works harder to get valid DNSSEC data.
so-rcvbuf: 4m option added. Set this on large busy servers to not drop the occasional packet in spikes due to full socket buffers. netstat -su keeps a counter of UDP dropped due to full buffers.
auto-trust-anchor-file option with RFC5011 support, code from the NLnet Labs autotrust project(BSD license), is incorporated. In this way unbound can support trust anchor revocation properly, even revocation back to the unsigned state. It can read normal anchor files or autotrust files initially, after probing the file is written to in a format specific to unbound.
use linebuffering for log-file: output, this can be significantly faster than the previous fflush method and enable some class of resolvers to use high verbosity (for short periods). Not on windows, because line buffering does not work there.
Patch from Zdenek Vasicek and Attila Nagy for using the source IP from python scripts. See pythonmod/examples/resip.py.
Got a patch from Luca Bruno for libunbound support on windows to pick up the system resolvconf nameservers and hosts there.
call OPENSSL_config() in unbound and unit test so that the operator can use openssl.cnf for configuration options.
Experimental support (disabled by default) for GOST for unofficial algorithm number 249 of draft-dolmatov-dnsext-dnssec-gost-01, tested to work with openssl-1.0.0beta and correct for examples in -01 draft.
edns-buffer-size option, default 4096. Can be set to 1480 in case of DNS UDP fragments not arriving from authority servers.
iana portlist updated.
contrib/split-itar.sh from Tom Hendrikx to split anchors.mf from the IANA ITAR into individual key files that can be tracked with auto-trust-anchor-file.

Bug Fixes

fixed do-udp: no (only TCP is used).
removed abort on prealloc failure, error still printed but softfail.
Fix bug where autotrust does not work when started with a DS.
Fix double time subtraction in negative cache reported by Amanda Constant and Hugh Mahon.
fix unbound-host so -d can be given before -C.
fix DNSSEC-missing-signature detection for minimal responses for qtype DNSKEY (assumes DNSKEY occurs at zone apex).
fix compile of unbound-host when --enable-alloc-checks.
Fix lookup problem reported by Koh-ichi Ito and Jaap Akkerhuis.
Manual page fixes reported by Tony Finch.
Fix memory leak reported by Tao Ma.
increased MAXSYSLOGLEN so .bg key can be printed in debug output.
Fix bug where DNSSEC-bogus messages were marked with too high TTL. The RRsets would still expire at the normal time, but this would keep messages bogus in the cache for too long.
documented that load_cache is meant for debugging.
fixup printing errors when load_cache, they were printed to the SSL connection which had just broken, now to the log.
Changes to make unbound work with libevent-2.0.3 alpha. (in configure detection due to new ssl dependency in libevent).
do not call sphinx for documentation when python is disabled.
remove EV_PERSIST from libevent timeout code to make the code compatible with the libevent-2.0. Works with older libevent too.
fix memory leak in python code.
makefile fix for parallel makes.
fixup unbound-control lookup to print forward and stub servers.
fixup memleak in trust anchor unsupported algorithm check.
free all memory on program exit, fix for ssl and flex.
fixup DS lookup at anchor point with unsigned parent.
fixup DLV lookup for DS queries to unsigned domains.
Fix so that servers are only blacklisted if they fail to reply to 16 queries in a row and the timeout gets above 2 minutes.
unbound-control lookup prints out infra cache information, like RTT.
Fix bug in DLV lookup reported by Amanda from Secure64. It could sometimes wrongly classify a domain as unsigned, which does not give the AD bit on replies.
Thanks to Surfnet found bug in new dnssec-retry code that failed to combine well when combined with DLV and then a validation failure.
removed small memory leak from config file reader.
fix manpage errors reported by debian lintian.
Fixed validation failure for CNAME to optout NSEC3 nodata answer.
unbound-host does not fail on type ANY.
Fixed wireparse failure to put RRSIGs together with data in some long ANY mix cases, which fixes validation failures.
Fixed signer detection of CNAME responses without signatures.
Fixed libunbound memleak on error condition by Eric Sesterhenn.

Unbound 1.3.4

Download:: unbound-1.3.4.tar.gz | sha1 | sha256 | pgp sig
Date:: 07 Oct, 2009

Bug Fixes

Fixed bug in NSEC3 validation handling code: Under specific circumstances checks of signatures over NSEC3 records are not done. As a result carefully crafted delegation responses (created through exploiting general DNS vulnerabilities such as DNS packet spoofing) can be used to downgrade an existing secure delegation to insecure. Unbound users who depend on DNSSEC validation are advised to upgrade.
iana portlist updated.

Unbound 1.3.3

Download:: unbound-1.3.3.tar.gz | sha1 | sha256 | pgp sig
Date:: 04 Aug, 2009

Features

feature val-log-level: 1 prints validation failures so you can keep track of them during dnssec deployment.
contrib/update-anchor.sh has -r option for root-hints.
crosscompile possible
verified that --enable-sha2 works with draft rsasha256-14

Bug Fixes

nicer warning when algorithm not supported, tells you to upgrade.
Updated unbound-cacti contribution from Dmitriy Demidov, with the queue statistics displayed in its own graph.
Fix bug found by Michael Tokarev where unbound would try to prime the root servers even though forwarders are configured for the root.
Ignore transient sendto errors, no route to host, and host, net down.
Fix server selection, so that it waits for open target queries when faced with lameness.
iana portlist updated.
Updated ldns tarball for solaris x64 compile assistance.
Fixed to not use RAND_MAX on windows, so all 16 ID bits are used.

Unbound 1.3.2

Download:: unbound-1.3.2.tar.gz | sha1 | sha256 | pgp sig
Date:: 13 Jul, 2009

Bug Fixes

Fix #261: Fix for crash at start on Windows.

Unbound 1.3.1

Download:: unbound-1.3.1.tar.gz | sha1 | sha256 | pgp sig
Date:: 09 Jul, 2009

Features

unbound_munin_ in contrib uses ps to show total memory rss if sbrk hack does not work.
Added build-unbound-localzone-from-hosts.pl to contrib, from Dennis DeDonatis. It converts /etc/hosts into config statements.

Bug Fixes

Fixup potential wrong NSEC picked out of the cache.
If unfulfilled callbacks are deleted they are called with an error.
fwd above stub in configuration works.
removed random whitespace from example.conf.
Fixed bug where cached responses would lose their security status on second validation, which especially impacted dlv lookups. Reported by Hauke Lampe.
Fixup opportunistic target query generation to it does not generate queries that are known to fail.
harden-referral-path: handle cases where NS is in answer section.
updated fedora specfile in contrib from Paul Wouters.
Fix EDNS fallback when EDNS works for short answers but long answers are dropped.
On Linux, fragment IPv6 datagrams to the IPv6 minimum MTU, to avoid dropped packets at routers.
Fix of message parse bug where (specifically) an NSEC and RRSIG in the wrong order would be parsed, but put wrongly into internal structures so that later validation would fail.
Queries for type DS when forward or stub zones are there. They are performed to higherup domains, and thus treated as if going to higher zones when looking up the right forward or stub server. This makes a stub pointing to a local server that has a local view of example.com signed with the same keys as are publicly used work. Reported by Johan Ihren.
same thing fixed for forward-zone and DS, chain of trust from public internet into the forward-zone works now.
flush_type and flush_name remove message cache entries as well, so they remove errors from the cache as well
delegationpoint bogus flag copied fix
openssl key files are opened 'apache-style', from user root and before the chroot. This makes permissions on remote-control key files easier.
fail to configure with python if swig is not found.
Fix of empty -L during linking
updated ldns tarball to latest
updated iana portlist

Unbound 1.3.0

Download:: unbound-1.3.0.tar.gz | sha1 | sha256 | pgp sig
Date:: 11 Jun, 2009

Features

Major features are Windows port, and Python contribution. Previous releases accidentally enabled experimental rsasha256 algorithms, fixed, see below. There are minor features and bug fixes too.
initgroups(3) is called to drop secondary group permissions, if this OS functionality is available.
daemon(3) posix call is used when available
configure option --with-ldns-builtin forces the use of the inluded ldns package with the unbound source. The -I include is put before the others, so it avoids bad include files from an older ldns install.
--enable-sha2 option for rsasha256 and rsasha512 support (experimental because it is still in working group draft stage). Default is off. Previous releases accidentally enabled this feature when lib openssl supported SHA256. It then used algorithms 8, 9 for RSASHA256 and 10, 11 for RSASHA512 (using four numbers as was according to the draft spec at that time). The earlier versions support NSEC and NSEC3 for all these algorithm numbers. People with these earlier versions may also have earlier openssl versions (0.9.7), and therefore the experimental feature is disabled. As long as these signing algorithm code points are not allocated, there is no problem. You are advised to upgrade to the current version to avoid surprises.
new option log-time-ascii: yes if you enable it prints timestamps in the log file as Feb 06 13:45:26 (like syslog does).
verbosity level 5 logs customer IP for new requestlist entries.
contrib contains specfile for fedora 1.2.1 (from Paul Wouters).
call setusercontext() if available (on BSD)
Added stats_noreset feature for unbound-control.
Added flush_requestlist feature for unbound-control.
unbound-control status shows if root forwarding is in use.
Added forward command for unbound control to change forwarders to use on the fly.
unbound-checkconf and unbound server print warnings when trust anchors have unsupported algorithms.
Added contrib/update-itar.sh This script is similar to update-anchor.sh, and updates from the IANA ITAR repository. You can provide your own PGP key and trust repo, or can use the builtin. The program uses wget and gpg to work.
Support spaces and backslashes in configure default paths
register and deregister util programs for unbound.exe into the windows service control manager. Works on XP and with Vista UAC.
unbound can work as a service on windows, for the registry settings and default program location and so on, see the windows manual.
installer for unbound on windows. uninstalls too. Menu entries optional. Can install DLV anchor with updater application (anchor-update.exe, works a bit like update-anchor.sh) to enable DNSSEC easily. Uses the NSIS open source installer system.
Added contrib/unbound_cacti for statistics support in cacti, contributed by Dmitriy Demidov.
domain-insecure: "example.com" statement added. Sets domain insecure regardless of chain of trust DSs or DLVs. The inverse of a trust-anchor.
use _beginthreadex() when available (performs stack alignment on mingw)
added launchd plist example file for MacOSX to contrib.
reworked configure scripts to be neater.
python contribution from Zdenek Vasicek and Marek Vavrusa. (Sponsored by cz.nic for 'summer of code' development). This contains support to use libunbound from python code. And support to create unbound modules written in python that perform custom processing of queries. The code is disabled by default and needs to be enabled by passing options to configure. Installs the following files: /usr/lib/python2.x/site-packages/ unboundmodule.py unbound.py and _unbound.so*. The script examples are not installed. Sphinx docs can be built with make doc (if sphinx-build is available).
new libunbound calls to manage local data more easily
read /dev/random before chroot
suppress errors when trying to contact authority servers that gave ipv6 AAAA records for their nameservers with ipv4 mapped contents. Still tries to do so, higher verbosity shows the error.
clock skew checks in unbound, config statements.
Added cache-min-ttl option.
Fix #226: Added dump_requestlist feature for unbound-control.
Fix #227: Added flush_stats feature for unbound-control.
Fix #231: Added unbound-checkconf -o option, that prints that value from config file. Useful for scripting in management scripts and the like.

Bug Fixes

fix for threadsafety in solaris thr_key_create() in tests.
fixes for porting the python code to BSD and Darwin
fix for openssl-1.0.0beta, use of STRING #define, libdl linking.
Fix reentrant in minievent handler for unix. Could have resulted in spurious event callbacks.
fix munin plugin, perform cleanup of stale lockfiles.
Fix for removal of RSASHA256_NSEC3 protonumber from ldns. Also new rsasha512 (interim) algorithm number.
Detect FreeBSD jail without ipv6 addresses assigned.
Fixed a bug that caused messages to be stored in the cache too long. Hard to trigger, but NXDOMAINs for nameservers or CNAME targets have been more vulnerable to the TTL miscalculation bug.
fixed bug in unbound-control flush_zone where it would not flush every message in the target domain. This especially impacted NXDOMAIN messages which could remain in the cache regardless.
Fixup so no non-absolute rpaths are added.
Fixup validation of RRSIG queries, they are let through.
fix util/configlexer.c and solaris -std=c99 flag.
deprecation test for daemon(3) (on MacOSX).
module-config entries order is important. Documented.
Fix for and test for unknown algorithms in a trust anchor definition. Trust anchors with no supported algos are ignored. This means a (higher)DS or DLV entry for them could succeed, and otherwise they are treated as insecure.
Added tests, unknown algorithms become insecure. fallback works.
fixed so queries do not fail on opportunistic target queries.
munin plugin fix benign locking error printout.
fixup --export-symbols to be -export-symbls for libtool. This should fix extraneous symbols exported from libunbound. Thanks to Ondrej Sury and Robert Edmonds for finding it.
document FAQ entry on stub/forward zones and default blocking.
Remove fwrite warning on Ubuntu
Added more cycle detection. Also for target queries.
Fixup bug where during deletion of the mesh queries the callbacks that were reentrant caused assertion failures. Keep the mesh in a reentrant safe state. Affected libunbound, reload of server, on quit and flush_requestlist.
documented that unbound-host reads no config file by default.
slightly nicer memory management in iter-fwd code.
small refactor of stats clearing.
fixup EOL in include directive (reported by Paul Wouters).
config parser changed. Gives some syntax errors closer to where they occurred. Does not enforce a space after keyword anymore. Does not allow literal newlines inside quoted strings anymore.
detect event_base_new() in libevent-1.4.1 and later and use it.
MacOSX Leopard cleaner text output from configure.
change in libunbound API: ub_cancel can return an error, that the async_id did not exist, or that it was already delivered. The result could have been delivered just before the cancel routine managed to acquire the lock, so a caller may get the result at the same time they call cancel. For this case, ub_cancel tries to return an error code. Fixes race condition in use of ub_cancel() libunbound function.
Fixup assertion failure (thanks to Brett Carr).
Fix detection of no ipv6 on XP (with different error code).
Fixup a crash-on-exit which was triggered by a very long queue.
Fixed bug that could cause a crash if root prime failed when there were message backlogs.
fixup documentation-bug in README reported by Matthew Dempsky.
Fixup bad free() when wrongly encoded DSA signature is seen. Reported by Paul Wouters.
updated ldns tarball to latest
updated iana portlist

Unbound 1.2.1

Download:: unbound-1.2.1.tar.gz | sha1 | sha256 | pgp sig
Date:: 10 Feb, 2009

Features

negative caching for failed queries. Queries that failed (because the entire domain is down) are cached for a very short time (seconds), this lowers the load generated by the failed queries. If the failure is local, like out of memory, it is not cached.
stop resolving AAAAs promiscuously when they are in the negative cache, together with the negative caching feature (just above) this dampens the spikiness of the requestlist size.
unbound-host -4 and -6 options. Stops annoying ipv6 errors when debugging with unbound-host -4 -d ...
honor QUIET=no on make commandline (or QUIET=yes ).

Bug Fixes

Fixed server deadlock. Added cycle detection for NS-check, addr-check, root-prime and stub-prime queries in the iterator.
fixup configure checks for compilation with Solaris sun studio cc compiler, ./configure CC=/opt/SUNWspro/bin/cc
fixup warnings emitted by sun studio compiler.
the TTL comparison for the cache used different comparisons, causing many cache responses that used the iterator and validator state machines unnecessarily. Fixed.
Fixed occasional SERVFAIL response when EDNS traffic is dropped for a domain. Set retry from 4 to 5 so that EDNS drop retry is part of the first query resolve attempt, and cached error does not stop EDNS fallback.
removed debug prints in code that protects against bad referrals.
fix bug where unbound could crash using libevent 1.3 and older.
more quiet about ipv6 network failures, i.e. when ipv6 is not available (network unreachable). Debug still printed on high verbosity.
printout more detailed errors on ssl certificate loading failures.
builtin IANA allocated portlist updated (these ports are avoided).

Unbound 1.2.0

Download:: unbound-1.2.0.tar.gz | sha1 | sha256 | pgp sig
Date:: 14 Jan, 2009

Features

Wildcard support for trusted-keys-file: "/etc/keys/*.key"
unbound-control status command.
extended statistics has a number of ipv6 queries counter. contrib/unbound_munin_ was updated to draw ipv6 in the hits graph.
SElinux policy files in contrib/selinux for the unbound daemon, by Paul Wouters and Adam Tkac.

Bug Fixes

The long standing bug with libevent use is fixed. It turns out to be a race condition in the calls to libevent. The builtin mini-event did not have a problem being called like this, but libevent and libev usage is now fixed. Libevent 1.1 is reported to still give problems, but 1.4.5 and 1.4.8 seem fine.
Certain packets could cause an assertion failure. Resulting in a denial-of-service vector if the server was compiled with --enable-debug (assertions enabled). This is fixed.
fixed bug reported by Duane Wessels: error in DLV lookup, would make some zones that had correct DLV keys as insecure.
fix lame marking. security fix that resolves denial of service that could be triggered by an unusual configuration. Thanks to Mark Zealey for reporting.
no more race condition in makefile during built with high -j inside included libldns version.
iana portlist updated to most recent, avoids allocated ports.
L root server AAAA record added to builtin root hints.
removed possible race condition in unit test for race conditions.
fixup reported problem with transparent local-zone data where queries with different type could get nxdomain. Now queries with a different name get resolved normally, with different type get a correct NOERROR/NODATA answer.
HINFO no longer downcased for validation, making unbound compatible with bind and ldns.
fix reading included config files when chrooted. Give full path names for include files. Relative path names work if the start dir equals the working dir.
fix libunbound message transport when no packet buffer is available.
fixup getaddrinfo failure handling for remote control port.
fixup so it works with libev-3.51 from http://dist.schmorp.de/libev/
ldns tarball updated with 1.4.1rc for DLV unit test.
fixup BSD port for infra host storage. It hashed wrongly.
follow ldns rc makedist name generation.
snapshot version uses _ not - to help rpm distinguish the version number.
do not reopen syslog to avoid dev/log dependency. This makes chroot environments easier.
better fix for bug #219: use LOG_NDELAY with openlog() call. Thanks to Tamas Tevesz.
fixed: unbound checkconf checks if key files exist if remote control is enabled. Also fixed NULL printf when not chrooted.
Fix problem reported by Jaco Engelbrecht where unbound-control stats freezes up unbound if this was compiled without threading, and was using multiple processes.
test for remote control with interprocess communication.
created command distribution mechanism so that remote control commands other than 'stats' work on all processes in a nonthreaded compiled version. dump/load cache work, on the first process.
fixup remote control local_data addition memory corruption bug.
configure complains when --without-ssl is given, fixed.
blacklisted servers are polled at a low rate (1%) to see if they come back up. But not if there is some other working server.
documented that the user of the server daemon needs read privileges on the keys and certificates generated by unbound-control-setup. This is different per system or distribution, usually, running the script under the same username as the server uses suffices. i.e. sudo -u unbound unbound-control-setup
unbound-control-setup.sh removes read/write permissions other from the keys it creates (as suggested by Dmitriy Demidov).
fixed tcp accept, errors were printed when they should not.
fixup fatal error due to faulty error checking after tcp accept.
add check in rlimit code to avoid integer underflow.
rlimit check with new formula; better estimate for number interfaces.

Unbound 1.1.1

Download:: unbound-1.1.1.tar.gz | sha1 | sha256 | pgp sig
Date:: 20 Nov, 2008

Bug Fixes

Fixed syslog with chroot, glibc syslog opens only on demand so a log line has to be printed before chroot.
fixup fatal error due to faulty error checking after tcp accept.
rlimit check on startup integer underflow fixup, also makes a more accurate estimate

Unbound 1.1.0

Download:: unbound-1.1.0.tar.gz | sha1 | sha256 | pgp sig
Date:: 11 Nov, 2008

Features

DLV support
contrib update-anchor.sh neatly updates keys for DLV or root or others and only restarts the nameserver when keys have changed. exits 0 when a restart is needed, other values if not. So, update-anchor.sh -d mydir && /etc/rc.d/unbound restart can restart unbound exactly when needed. Use -b for BIND mode.
Negative caching for NSEC, NSEC3 for DLV lookups, as well as for securely insecure delegations.
Filter out overreaching NSEC records
dev/log(syslog) opened before chroot
use setresuid/setresgid, more secure.
logfile message classification as notice, info, debug.
harden-referral-path option implements draft-wijngaards-dnsext-resolver-side-mitigation-00, protects against many Kaminsky variations. Default is off, because of added load it generates, and experimental status.
disallow nonrecursive queries for cache snooping by default. You can allow it using access-control: subnet allow_snoop. The defaults do allow access to authoritative data without RD bit.
DoS resistance implementation. Half of queries run-to-completion. Other half are a lifo where old entries are overwritten if 200 msec old.
Block DNS rebinding attacks. This disallows domains from the public internet from pretending to have internet addresses in your own netblock. Use the private-address and private-domain statements (see unbound.conf(5) man page for details). We may consider turning this on by default for rfc1918 (local subnet) addresses.
remote control feature, unbound-control. Remotely (using SSL) stop, change redirections, flush cache, load cache, store cache, or get statistics
extended statistics (off by default). Put Howto documentation on website.
munin example plugin to draw statistics added to contrib
hosts that drop EDNS packets are detected, eventually.
fixed recursion servers deployed as authoritative detection, so that as a last resort, a +RD query is sent there to get the correct answer.
RSASHA256 and RSASHA512 support, using experimental protocol numbers from draft.
stubs work much more intuitively, but can be configure for old and new behaviour with new option stub-prime. This makes stubs on localhost on a different port number work.
dns-0x20 fallback code implemented
IPv4 and IPv6 PTR shorthand local-data-ptr: "1.2.3.4 www.ex.com"
code refactored for domain, address tree lookups.
unbound-control-setup.sh script to set up (selfsigned) certificates.
spoof nearmiss indicator, when extended statistics are enabled, unbound-control stats prints out unwanted_replies count.
if server selection is faced with only bad choices, it will attempt to get more options to be fetched.
changed bogus-ttl default value from 900 to 60 seconds. In anticipation that operator caused failures are more likely than actual attacks at this time. And thus repeated validation helps the operators get the problem fixed sooner. It makes validation failures go away sooner (60 seconds after the zone is fixed). Also it is likely to try different nameserver targets every minute, so that if a zone is bad on one server but not another, it is likely to pick up the 'correct' one after a couple minutes, and if the TTL is big enough that solves validation for the zone.
do not query bogus nameservers. It is as-if nameservers that have the NS or A or AAAA record bogus are listed as donotquery.
CFLAGS are picked up by configure from the environment.
silenced EHOSTDOWN, verbosity 2 and higher show it.
configure check for ldns version 1.4.0 or later
Fix for problem reported on mailing list, If a delegation point has no A but only AAAA and do-ip6 is no, resolution would fail. Fixed to ask for the A and AAAA records. It has to ask for both always, so that it can fail quietly, from TLD perspective, when a zone is only reachable on one transport.

Bug Fixes

Fixed rrset security updated overwriting rfc2181 trust status. This makes validated to be insecure data just as worthless as nonvalidated data, and 2181 rules prevent cache overwrites to them.
Fixed setreuid on MacOSX 10.4
Fixed so make realclean works better, by Rober Edmonds
extra rc.d unbound flexibility for freebsd/nanobsd.
nicer do-auto log message when user sets incompatible options. DLV implemented.
variable name ameliorated in log.c.
in iana_update, no egrep, but awk use.
fixed, pidfile can be outside chroot. openlog is done before chroot and drop permissions. logfile is created with correct permissions again. Some errors are not written to logfile (pidfile writing, forking), and these are only visible by using the -d commandline flag.
Fix update-anchor.sh to work both in BSD shell and bash.
Fix so unsigned additionals are not marked bogus, they are left unchecked, since signatures may have fallen off due to message size. Unchecked items are removed from the additional just like bogus is for that message. Defers validation for those rrsets.
Fix assertion fail on bogus key handling
Fix so dnssec lameness detection works on first query at trust apex.
Fix compilation without pthreads on linux.
builtin iana assigned portlist updated
ldns snapshot inside source tarball updated to 1.4.0
Fix NSEC_AT_APEX classification for short typemaps.
Fix nonblocking and timeouts on TCP sockets
Fix for multiple simultaneous timeout back offs. Could cause trouble for forwarders
Fix SHA256 DS downgrade, no longer possible to downgrade to SHA1.
Fix negative TTL values appearing (reported by Attila Nagy)
detect if libssl needs libdl. For static linking with libssl.
Fix build process for Mac OSX linker
Fix possible memory leak in key_entry_key deletion. Would leak a couple bytes when trust anchors were replaced.
DNAMEs used from cache have their synthesized CNAMEs initialized properly.
Fix file descriptor leak for localzone type deny (for TCP).
Fix memleak for the keyword 'nodefault' when reading config. Would leak bytes per reload command received.
Fix listen to closed fd, would log a message with "bad file descriptor"

Unbound 1.0.2

Download:: unbound-1.0.2.tar.gz | sha1 | sha256 | pgp sig
Date:: 07 Aug, 2008

Features

Stricter filtering of messages. This means that CNAMEs and DNAMEs are handled with more paranoia, as well as the removal of more irrelevant rrsets. More discussion at .

Bug Fixes

Fixup qtype DS validation code
Fix for nicer entropy warning message, OS hints in manpage.
Fix segfault on exit cleanup of the app if packets were still waiting for udp port numbers.

Unbound 1.0.1

Download:: unbound-1.0.1.tar.gz | sha1 | sha256 | pgp sig
Date:: 16 Jul, 2008

Features

This version features bugfixes to compile on various distributions, some options necessary to assist packaging and distribution of unbound, a couple of fixes for looking up corner cases (badly operated domains), and a cleanup of code for config file reading.
contrib unbound.spec from Patrick Vande Walle
mingw port with basic functionality on Windows XP and Windows Vista (single threaded, UDP, TCP, IPv4, IPv6, validation)
Added IPv6 example prefix to AS112 default blocklist

Bug Fixes

fixup fedora 9 compilation (in6_pktinfo definition)
CREDITS fixup of history
ldns-1.2.2 is ignored if installed, and builtin 1.3.0 ldns used
lex input and unput functions not generated (compile warnings)
update of ldns tarball to latest ldns svn.
update of avoided ports to latest IANA allocated portlist
fixed up statements of the form local-zone: "30.172.in-addr.arpa." nodefault, so that the trailing dot is not required.
reported by Robert Edmonds (akamai zones), fixed so that if multiple CNAME records for a name are returned, the first is used.
reported by Richard Doty for mail.opusnet.com, check lameness more cautiously, first check SOA record, before looking at NS record, then, additionally, check the AA bit.
reported for newegg.com, more detailed lameness checking to distinguish AAAA lameness from qtype A lameness.
fixup compiling on eeepc xandros linux
fixup memory leak in root hints file reading
fixup validation for qtype DS queries with trust anchor for the same name
libunbound ub_resolve, fix handling of error condition during setup.
lowered log_hex blocksize to fit through BSD syslog linesize.
make test checks for ldns-testns requirement of tcp_sigpipe test
call tzset before chroot to have correct timestamps in system log
fixed compilation failure on opensuse, the --disable-static configure flag caused problems. Patch from Klaus Singvogel
fixed unportable shell usage in configure (relied on bash)
same fix as 177.
fixed buffer overflow in unbound-checkconf use of strncat
fixed buffer overflow in ldns (called by unbound to parse config file parts)
pidfile, rundir, and chroot configure options. Also the example.conf and manual pages get the configured defaults. You can use: (or accept the defaults to /usr/local/etc/unbound/) --with-conf-file=filename --with-pidfile=filename --with-run-dir=path --with-chroot-dir=path
-r option for unbound-host, read resolv.conf.
--disable-shared not passed along to ldns included with unbound. Fixed so that configure parameters are passed to the subdir configure script. Fixed that ./libtool is used always, you can still override manually with ./configure libtool=mylibtool or set $libtool in the environment.

Unbound 1.0.0

Download:: unbound-1.0.0.tar.gz | sha1 | sha256 | pgp sig
Date:: 20 May, 2008

Features

This code is the public release
Honors $DESTDIR during make install and make uninstall, useful for rpm and deb packaging.
contrib .spec file to build RPMs with
iana port list updated
added IPv6 addresses for builtin root hints

Bug Fixes

Fixup no-IPv4 problem in error callback
No linking with -lrt if not needed
library version now has proper version-info (Thanks Ondrej Sury)
configure --disable-rpath performs libtool fixup
MacOSX 10.5 /etc/hosts lines ending in %lo0 are skipped (Thanks John Dickinson)

Unbound 0.11

Download:: unbound-0.11.tar.gz | sha1 | sha256 | pgp sig
Date:: 24 Apr, 2008

Features

This code is public beta and ready for deployment.
Default file locations changed to /usr/local/etc/unbound
RTT banding (draft-forgery-resilience)
query name checks (draft-forgery-resilience)
random ports improved (draft-forgery-resilience)
AD bit signaling (AD bit in query requests AD bit in reply)
unbound tries to set ulimit(fds) if it needs to
stats to rrdtool script in contrib (Thanks Kai Storbeck)
FEATURES document

Bug Fixes

Fixed so works with libevent-1.4.3+
iterator logs spelling fixed (Thanks Koji Kobayashi)
RFC2181 compliance improved (Thanks Jinmei Tatuya)
DSA EVP signature decoding fixed
chroot functionality better documented and checked (Thanks Randy Bush)
ignore SIGPIPE from dns clients (Thanks Kai Storbeck)

Unbound 0.10

Download:: unbound-0.10.tar.gz | sha1 | sha256 | pgp sig
Date:: 03 Mar, 2008

Features

This code is public beta and ready for deployment.
updated ldns-tarball inside source from trunk for latest NSEC3 type codes
installation to /usr/local/sbin by default now, like other servers do
libunbound returns the full answer packet (with signatures, additional data, NSECs ...)
option 'use-caps-for-id: yesno', experimental implementation of draft-dns-0x20.
default configure uses builtin event mechanism, since it is faster and usually good enough. Use libevent when you use huge outgoing port ranges.
Various optimisations
make test shows an indication of cache speed
unbound-host patch (from Jan-Piet Mens) to read config file
added contrib/ dir with an /etc/rc.d script for FreeBSD

Bug Fixes

--prefix option for configure also changes directory: pidfile: and chroot: defaults in config file.
fixed so you can start without a config file (will complain, but start with defaults).
fixed read of empty lines in /etc/hosts by libunbound
fix to install all manual pages (unbound-host and libunbound pages too)
fixed memory leaks in libunbound (during cancellation and ub_wait).

Unbound 0.9

Download:: unbound-0.9.tar.gz | sha1 | sha256 | pgp sig
Date:: 08 Feb, 2008

Features

This code is beta and not recommended for operational deployment.
Remade verbosity levels, new level 2.
can answer multiple queries over one TCP stream.
library libunbound offers a validating stub implementation.
unbound-host uses library to validate and lookup like host
statistics-interval: seconds option added.
interface-automatic: option added. Experimental, uses socket options to guarantee correct source address on UDP replies. Useful for multihomed hosts.
Memory sizes in config can be given with k, m, or g
Prints approximation of the median from histogram
unbound-checkconf checks for local-net misconfigurations

Bug Fixes

Fixed roothints and keyfiles access from chrooted daemon.
Random generator uses less entropy.

Unbound 0.8

Download:: unbound-0.8.tar.gz | sha1 | sha256 | pgp sig
Date:: 07 Feb, 2008

Features

Local zone data - serve authoritative data
Access control list - ips that have recursion allowed
by default blocks AS 112 (reverse local net) queries
This code is pre-beta and not recommended for operational deployment.
per rfc2308, replaced default max-ttl value with 1 day.

Bug Fixes

Validation works now for non RD queries
duplicate checking for NSECs and NSEC3s after CNAMEs
do not downcase NSEC and RRSIG for verification. Follows draft-ietf-dnsext-dnssec-bis-updates-06.txt.

Unbound 0.7.2

Download:: unbound-0.7.2.tar.gz | sha1 | sha256 | pgp sig
Date:: 09 Jan, 2008

Features

bugfixes for closed beta test version, not recommended for widespread deployment

Bug Fixes

Fixup building the source from another directory.
Fixup failure on start due to lack of entropy.

Unbound 0.7.1

Download:: unbound-0.7.1.tar.gz | sha1 | sha256 | pgp sig
Date:: 19 Nov, 2007

Features

bugfixes for closed beta test version, not recommended for widespread deployment

Bug Fixes

Fixes in make test to kill daemons more thoroughly after test
NSEC/RRSIG not downcased, from dnssec-bis-updates draft-06
libevent not found error nicer
README discusses GNU make needs

Unbound 0.7

Download:: unbound-0.7.tar.gz | sha1 | sha256 | pgp sig
Date:: 16 Nov, 2007

Features

closed beta test version, not recommended for widespread deployment
support branch for closed beta participants

Unbound 0.6

Download:: unbound-0.6.tar.gz | sha1 | sha256 | pgp sig
Date:: 16 Nov, 2007

Features

Operational features.
Secured by default (chroot).
Memory leaks gone, lameness detection, corner cases and various fixes
config file checker unbound-checkconf
root hints file supported
ldns library tarball included in source package for ease of installation
This code is pre-beta and not recommended for operational deployment.

Unbound 0.5

Download:: unbound-0.5.tar.gz | sha1 | sha256 | pgp sig
Date:: 02 Nov, 2007

Features

Validation.
Fixes to recursive iterator code.
This code is pre-beta and not recommended for operational deployment.

Unbound 0.4

Download:: unbound-0.4.tar.gz | sha1 | sha256 | pgp sig
Date:: 20 Sep, 2007

Features

Caching resolver.
This code is pre-beta and not recommended for operational deployment.

Unbound 0.3

Download:: unbound-0.3.tar.gz | sha1 | sha256 | pgp sig
Date:: 20 Jun, 2007

Features

Forwarder with RRset cache.
This code is pre-beta and not recommended for operational deployment.

Unbound 0.2

Download:: unbound-0.2.tar.gz | sha1 | sha256 | pgp sig
Date:: 01 May, 2007

Features

Basic caching forwarder
This code is pre-beta and not recommended for operational deployment.

Unbound 0.1

Download:: unbound-0.1.tar.gz | sha1 | sha256 | pgp sig
Date:: 28 Mar, 2007

Features

Threaded non-caching forwarder.
This code is pre-beta and not recommended for operational deployment.

Unbound 0.0

Download:: unbound-0.0.tar.gz | sha1 | sha256 | pgp sig
Date:: 19 Feb, 2007

Features

Build environment, configure, make and a non-caching DNS forwarder.
This code is pre-beta and not recommended for operational deployment.

UNBOUND

Unbound 1.22.0 (Current version)

Features

Bug Fixes

Older versions

Unbound 1.21.1

Bug Fixes

Unbound 1.21.0

Features

Bug Fixes

Unbound 1.20.0

Features

Bug Fixes

Unbound 1.19.3

Features

Bug Fixes

Unbound 1.19.2

Bug Fixes

Unbound 1.19.1

Bug Fixes

Unbound 1.19.0

Features

Bug Fixes

Unbound 1.18.0

Features

Bug Fixes

Unbound 1.17.1

Features

Bug Fixes

Unbound 1.17.0

Features

Bug Fixes

Unbound 1.16.3

Bug Fixes

Unbound 1.16.2

Features

Bug Fixes

Unbound 1.16.1

Features

Bug Fixes

Unbound 1.16.0

Features

Bug Fixes

Unbound 1.15.0

Features

Bug Fixes

Unbound 1.14.0

Features

Bug Fixes

Unbound 1.13.2

Features

Bug Fixes

Unbound 1.13.1

Features

Bug Fixes

Unbound 1.13.0

Features

Bug Fixes

Unbound 1.12.0

Features

Bug Fixes

Unbound 1.11.0

Features

Bug Fixes

Unbound 1.10.1

Bug Fixes

Unbound 1.10.0

Features

Bug Fixes

Unbound 1.9.6

Features

Bug Fixes

Unbound 1.9.5

Bug Fixes

Unbound 1.9.4

Bug Fixes

Unbound 1.9.3

Features

Bug Fixes

Unbound 1.9.2