[systemd-devel] disable EDNS in systemd-resolved

[Marc Haber]

On Fri, Dec 27, 2019 at 11:25:20AM +0200, Mantas Mikulėnas wrote:
> On Fri, Dec 27, 2019 at 10:52 AM Marc Haber <mh+systemd-devel at zugschlus.de>
> wrote:
> > how would I disable EDNS in systemd-resolved? Some recursive DNS servers
> > (for example in public hotspots) choke on queries with EDNS options.
> >
> 
> I don't think there is a configuration option, but resolved *should*
> automatically detect lack of EDNS support (grep the system log for
> "feature"). Do the queries simply time out, or do they get rejected?
> 
> Make sure you don't have DNSSEC support set to "yes", since it depends on
> EDNS.

The DNS recursor of the Hotsplots network that I will use in the next
three days just returns an authoritative NXDOMAIN. Yes, that's broken. I
still need my system to handle the situation.

Greetings
Marc

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