NXDOMAIN Error
Jim Reid
jim at rfc1035.com
Mon Jan 24 18:50:31 UTC 2000
>>>>> "Barry" == Barry Finkel <b19141 at achilles.ctd.anl.gov> writes:
Jim> Dump your name server's cache and look for any resource
Jim> records for barge.mcs.anl.gov. The entries in the cache dump
Jim> file will tell you where your name server learnt about that
Jim> name. It's also possible that the name is in some zone that
Jim> is slaved on your name server.
Barry> I have a few questions. On a Solaris 5.6 system (BIND
Barry> 8.2.2-P5) how do I dump the cache?
The same way as you should do it on any other BIND platform:
ndc dumpdb
And if someone's running ancient code that doesn't have ndc, they'd
better upgrade!
Barry> I did not see anything in the BIND 3ed book.
Try pp302-306. I just looked up "dump" in the index when there was
nothing appropriate under the index entry for "cache".
Barry> Also, what should I expect to find in the cache?
I refer the Honourable Member to the answer I already gave, as they
in Parliament.
Barry> barge.mcs.anl.gov
Barry> was removed when the zone for which it was the primary name
Barry> server was removed. So, there is no entry in dns for
Barry> barge.mcs.anl.gov . It is unclear to me exactly what I
Barry> might find in the cache regarding the nodename barge.
Just because you've zapped the name doesn't mean it has gone. There's
nothing stopping someone adding an NS/CNAME/MX/etc record pointing at
barge.mcs.anl.gov in their zone files, even if that name doesn't exist.
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