DNS resolving problems
Jason Vas Dias
jvdias at redhat.com
Wed Feb 15 23:02:31 UTC 2006
On Wednesday 15 February 2006 23:37, Patrick von der Hagen <patrick at wudika.de> wrote:
>
> [root at localhost ~]# cat /etc/resolv.conf
> # generated by NetworkManager, do not edit!
>
> search hek.uni-karlsruhe.de
>
>
> nameserver 62.72.64.237
> nameserver 62.72.64.241
>
This appears to be the problem - your glibc resolver is contacting
those nameservers directly, and they are possibly returning AAAA
records before A records for the NS or name you are looking up -
sending us the tcpdump log may be helpful in diagnosing the
glibc resolver problem.
NetworkManager(NM) is meant to use named in caching-nameserver mode,
and to write ONLY the line:
'nameserver 127.0.0.1
'
to /etc/resolv.conf .
It appears that this aspect of NM is not working correctly at the moment -
the NM maintainer has been informed and is working on a solution.
Meanwhile, if you remove the nameservers from /etc/resolv.conf:
$ sed -i '/nameserver/d' /etc/resolv.conf
and start named:
$ service named start
The timeouts should disappear.
Regards,
Jason Vas Dias<jvdias at redhat.com>
Red Hat Inc.
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