[nsd-users] Featurerequest for nsd4

Paul Wouters paul at nohats.ca
Tue Jan 29 16:11:35 CET 2013


On Tue, 29 Jan 2013, W.C.A. Wijngaards wrote:

>> http://cr.yp.to/djbdns/tinydns-data.html: You may include a
>> timestamp on each line. If ttl is nonzero (or omitted), the
>> timestamp is a starting time for the information in the line; the
>> line will be ignored before that time. If ttl is zero, the
>> timestamp is an ending time (``time to die'') for the information
>> in the line; tinydns dynamically adjusts ttl so that the line's DNS
>> records are not cached for more than a few seconds past the ending
>> time. A timestamp is an external TAI64 timestamp, printed as 16
>> lowercase hexadecimal characters. For example, the lines
>>
>> +www.heaven.af.mil:1.2.3.4:0:4000000038af1379
>> +www.heaven.af.mil:1.2.3.7::4000000038af1379 ----
>>
>> Do you think, it could be possible with nsd too?
>
> This is a fairly substantial feature request, and cannot be in NSD 4.0

Or in any DNSSEC signed zone, as the TTL is covered by the RRSIG. You
would have to invent some new syntax. If you want something like this,
it is probably best to use dynamic updates and cron.

Paul


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