[nsd-users] Featurerequest for nsd4

Andreas Schulze andreas.schulze at datev.de
Mon Jan 28 13:24:22 CET 2013


Hello Wouter,

We used tinydns for many years. After migration to nsd3 we miss only one feature present in tinydns only:

tinydns may switch addresses by decreasing the ttl for old data and serve new data
starting from a fixed timestamp.

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?
Andreas


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Andreas Schulze
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