I ran into a similar situation where the ns was behind a Juniper SRX doing NAT. 
Said Juniper had a "smart" DNS piece (ALG) that does special stuff on DNS 
packets; max record length, special NAT, etc.  I had to disable the DNS ALG to 
fix the "problem".

If your ns is behind a NATing device, start there.  Or, if you can run tcpdump 
on the ns, or before it hits a fw/NAT - ensure the reply packets have the 
"proper" IP in them as they leave the ns.

----- Original Message -----
From: owner-freebsd-questi...@freebsd.org <owner-freebsd-questi...@freebsd.org>
To: freebsd-questions@freebsd.org <freebsd-questions@freebsd.org>
Sent: Fri Nov 19 18:50:33 2010
Subject: DNS Resolution

I have a weird DNS problem I am hoping someone can help me with.

I have server running FBSD 8.0.  /etc/resolv.conf is set to use my ISP's DNS 
servers for name resolution.

If run dig @ns3.socket.net XXXX.yyy.ZZZZ the INTERNAL ip address of the server 
is returned.  

If I run d...@ns3.socket.net XXXX.yyy.ZZZZ axfr, the correct information for 
the entire zone is returned.  I am only noticing problems with XXXX.yyy.ZZZZ.  
All other names seem to resolve correctly.

Any suggestions would be greatly appreciated.

Thanks,



Jay

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