Re: /etc/resolv.conf being blanked
On Sun, Oct 11, 2015 at 07:37:24PM +0200, Pascal Hambourg wrote:
> Dominic Hargreaves a écrit :
> > On Sun, Oct 11, 2015 at 01:47:57PM +0200, Pascal Hambourg wrote:
> >>
> >> That may be generated from received IPv6 router advertisements (RA) by
> >> rdnssd if installed. In that case, you can remove this package if you
> >> don't need DNS resolution through the IPv6 server. Otherwise, check
> >> whether the package resolvconf is installed.
> >
> > Aha! Thanks for the clue.
> >
> > The problem appears to have gone away after removing rdnssd, so I assume
> > it was a particularly severe case of #740998 (an RC bug which was sadly
> > not fixed in jessie).
>
> Even though I was aware of issues with rdnssd, I didn't know about this
> RC bug. I'll check it.
>
> > I'll follow up on that bug (and probably a new bug against
> > debian-installer to have rdnssd not installed).
>
> Problem is, rdnssd is required in an IPv6-only network with
> autoconfiguration in order to fill /etc/resolv.conf, or a dual-stack
> network with only autoconfigured IPv6 DNS. IME, installing resolvconf
> solves the competition between the different DNS sources (RDNSS, DHCP
> client, Network Manager...) for resolv.conf.
>From what I've read NM can do this and thus rdnssd is not required.
It's certainly picking up the IPv6 resolver in my dual-stack network -
it would be surprising if it behaved differently on a v6-only network.
Dominic.
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