[CentOS] IPV6 and DNS...

Sun Apr 25 00:51:52 UTC 2010
Karanbir Singh <mail-lists at karan.org>

On 23/04/10 10:19, John Doe wrote:
> Hi,
> I keep getting entries like these in my logs:
>    network unreachable resolving '0.centos.pool.ntp.org/AAAA/IN': 2001:500:40::1#53: 1 Time(s)
>    network unreachable resolving '0.centos.pool.ntp.org/AAAA/IN': 2001:500:e::1#53: 1 Time(s)
>    network unreachable resolving '0.centos.pool.ntp.org/AAAA/IN': 2001:dc3::35#53: 1 Time(s)
> I don't see any IPV6 parameters to disable in named.conf, apart from the 'listen-on-v6'
> which I commented, and the 'query-source-v6' which is commented by default...
> I disabled IPV6 in the sysconfig files; but not in the modprobe.conf though...
> Can I just ignore these "errors"?

if you want to ignore these, yes its fine to do that. but a better fix 
is to stop the client from looking these up and go straight to only 
using ipv4 if thats all you really need. You'll notice a non-trivial 
increase in dns performance as well.

Karanbir Singh
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