Re: dnscache querying wrong (old?) NS sometimes

Rihad <[email protected]>
Newsgroups gmane.network.djbdns
Message-ID <[email protected]>
> Rihad wrote:
>> Hi there, from time to time dnscache seems to be querying a wrong NS to
>> resolve a domain, and doing it again and again after the old NS record
>> expires. It starts querying the correct NS only after I restart it by
>> running "svc -t /var/service/dnscache". Hint: all such NS records have
>> been "out-of-bailiwick" domains, in DJB's parlance, both wrong (old?)
>> and correct, but I'm not sure it's related. The only patch differing my
>> setup from the vanilla djbdns is DUMPCACHE, which I currently don't use
>> anyway due to very heavy use of RAM when initializing (i.e. I moved away
>> DUMPCACHE, DUMPCACHETMP & SLURPCACHE).
>> 
>> BIND 9 doesn't seem to have this issue.
>> 
>> Anyone knows what's wrong? Thanks.
>> 
>> 
> Are the old servers still responding to queries giving the old NS records?

You mean as additional data alongside with the A records? I haven't 
checked that, I will check next time. But parent *.gtld-servers.net NS 
are definitely no longer delegating to the old NS, which is supported by 
the fact that a mere dnscache restart brings everything together. If I 
instead wait long enough to let the NS records expire they still get 
refreshed wrongly.
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