F21 System Wide Change: Default Local DNS Resolver

Alexander Larsson alexl at redhat.com
Tue Apr 29 15:15:57 UTC 2014


On tis, 2014-04-29 at 14:15 +0200, Jaroslav Reznik wrote:
> = Proposed System Wide Change:  Default Local DNS Resolver = 
> https://fedoraproject.org/wiki/Changes/Default_Local_DNS_Resolver
> 
> Change owner(s): P J P <pjp at fedoraproject.org>, Pavel Šimerda 
> <pavlix at pavlix.net>,	 Tomas Hozza <thozza at redhat.com>
> 
> To install a local DNS resolver trusted for the DNSSEC validation running on 
> 127.0.0.1:53. This must be the only name server entry in /etc/resolv.conf.

This is gonna conflict a bit with docker, and other  users of network
namespaces, like systemd-nspawn. When docker runs, it picks up the
current /etc/resolv.conf and puts it in the container, but the container
itself runs in a network namespace, so it gets its own loopback device.
This will mean 127.0.0.1:53 points to the container itself, not the
host, so dns resolving in the container will not work.

Not sure how to fix something like that though...






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