19 Úno
2024
19 Úno
'24
8:32
On 18/02/2024 23.03, Ondřej Caletka wrote:
For domain name github.com <http://github.com>
(which sometimes
returns no A record), I always receive an answer with TTL set to 60.
It seems like this name does not get cached at all. See the test
output below.
Interestingly, if I delete cache files and restart the resolver, the
TTL starts decreasing as expected. Is this a sign that something was
wrong with the cache before? Or is this some sort of cache
optimization for low TTL records?
Nothing comes to my mind right now, and I don't reproduce it. If you
could get debug logs from a period when it happens, that would be nice.
There's certainly no such optimization, so it's most likely some kind of
bug. Possibly in the dns64 module, as that's a more fragile part than
the core.
--Vladimir