A container running its own avahi-daemon collides with the host's on :5353.
Instead publish to the host avahi over its mounted D-Bus socket using avahi-tools
(avahi-publish). Needs apparmor=unconfined (docker-default blocks the D-Bus
publish). Documented host prereqs incl. allow-interfaces for multi-bridge hosts.
Tested: publish reaches host avahi and registers the names; on hosts with many
docker bridges avahi self-collides until restricted to the LAN interface.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Oier Bravo Urtasun
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