default local DNS caching name server

[Colin Walters]

On Sun, Apr 13, 2014 at 10:18 AM, Richard W.M. Jones 
<rjones at redhat.com> wrote:
> 
> Unfortunately NetworkManager can't handle brief network outages
> without dropping the connection (RHBZ#1022954 comment 3).  This isn't
> desirable for servers that have ethernet and fixed IP addresses.

NetworkManager-config-server fixes this, it sets: ignore-carrier=*

See 
https://mail.gnome.org/archives/networkmanager-list/2013-June/msg00159.html