[Pkg-utopia-maintainers] Bug#1077937: Bug#1077937: avahi-daemon: WARNING: Detected another IPv4 mDNS stack running on this host. This makes mDNS unreliable and is thus not recommended.

[Michael Biebl]

Am 05.08.24 um 11:45 schrieb Luca Boccassi:
> On Mon, 5 Aug 2024 at 10:31, Laurent Bigonville <bigon at debian.org> wrote:
>>
>> On Mon, 05 Aug 2024 00:15:00 +0100 Luca Boccassi <bluca at debian.org> wrote:
>>
>>   > I'm not sure what could be done here, and I don't think anything should
>>   > even if it could. Either don't install/enable both at the same time, or
>>   > disable mDNS in resolved (it's optional).
>>
>> The avahi-daemon is pulled by some packages and disabling it completely
>> will break stuff.
>>
>> It seems that Fedora has gone the "disable mDNS support by default in
>> systemd-resolved" route:
>> https://src.fedoraproject.org/rpms/systemd/blob/rawhide/f/systemd.spec#_793
>>
>> An other option could be to let avahi-daemon puts a snippet to disable
>> systemd-resolved mDNS support in /etc/systemd/resolved.conf.d/
>>
>> So what's your preferred way here?
> 
> I do not want to disable it globally as it's possible to just disable
> avahi, but if Michael wants to ship a drop-in for resolved in avahi
> that's fine by me, as the drop-in can be masked locally too

I would prefer the solution Fedora has chosen, i.e. build systemd
with -Ddefault-mdns=no. This will provide a more predictable behaviour 
for systemd-resolved and is imho a cleaner solution. Users that want the 
mdns functionality can easily opt-in via a config snippet.




Regards,
Michael
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