On 07/01/2020 15:20, Niall O'Reilly wrote: Hi Niall,
> What's surprising is that an authoritative name server > shows both a decremented TTL value (as if it were answering > from cache) and the AA flag. It could be tinydns, using this feature: "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 specify that www.heaven.af.mil will have address 1.2.3.4 until time 4000000038af1379 (2000-02-19 22:04:31 UTC) and will then switch to IP address 1.2.3.7." Regards, Anand Buddhdev _______________________________________________ dns-operations mailing list dns-operations@lists.dns-oarc.net https://lists.dns-oarc.net/mailman/listinfo/dns-operations
