DiG 9.3.6-P1 segfaults on CentOS

Brian Keefer chort at smtps.net
Fri Dec 10 00:30:39 UTC 2010

On Dec 9, 2010, at 4:20 PM, Mark Andrews wrote:

> In message <B4FD91B6-C9DA-47DB-88BF-7F9AF7883A6A at smtps.net>, Brian Keefer write
> s:
>> Downloading the tarball for bind-9.7.2-P1 from ftp.isc.org and building it fr
>> om source fixed the segfault issue.
>> I'm still seeing a (possibly related) issue where if I do dig +trace txt <dns
>> bl record> it takes 6-10 seconds (measured by time(1)) to complete, all after
>> printing the authoritative server for DNSBL (prior to printing answer).
>> If I do dig @<dnsbl.hostname> txt <dnsbl record> I get the same pause. If I d
>> o dig @<dnsbl IP> txt <dnsbl record> there is no pause.  There is also no pau
>> se if I do dig <dnsbl.hostname>.  It doesn't look like there's any issue reso
>> lving the A RR, so why the long pause with dig +trace or dig @hostname vs. di
>> g @IP?
> And if you look for IPv6 addresses?
> 	dig aaaa <dnsbl.hostname>

That's exactly it.  I just figured that out by looking at the PCAP a minute before I read your e-mail.  It's silently ignored.  Mystery solved on the delay.


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