[Pkg-utopia-maintainers] Bug#892854: Hostname resolution getting stuck for many seconds

[Matthijs van Duin]

On 10 August 2018 at 18:50, Simon McVittie <smcv at debian.org> wrote:
> Which nss-mdns version are you using?

0.14.1-1

> What's in the hosts: line in your /etc/nsswitch.conf?

I currently have:
hosts:          files mymachines mdns_minimal resolve [!UNAVAIL=return] dns myhostname

but I also tried some variations. The delay simply occurs once it hits
the mdns_minimal module.

> I suspect that you and Eduard might be experiencing different issues
> that have the same high-level symptom (delays in name resolution).

Oops, I think you're right.  While quickly scanning through the bug
report it seemed to match, but I somehow managed to overlook that it
was resolved for the original poster, I thought the issue was still
open for him.  My sincere apologies!


> This effectively disables the code that tries to avoid interfering with
> a .local domain if one exists in normal (non-multicast) DNS, so it's
> likely to solve problems for some people but cause problems for others.

Yes I didn't mean to imply this is a valid solution, it simply
confirms that this particular code is indeed responsible for the delay
for me (and provides a workaround for me, since I personally don't
care about this feature).


> time host -t SOA debian.org.
> time host -t SOA local.

The first works, the second hangs for 10 seconds until
;; connection timed out; no servers could be reached

However, I'm using systemd-resolved and /etc/resolv.conf points to its
stub resolver.  If I ask the upstream dns server instead, I do get a
prompt answer.  So, it would seem that the bug actually lies in
systemd-resolved.

Matthijs