Bug#1110883: release-notes: mDNS resolution in systemd-resolved disabled by default, breaking existing setups

Colin J Crawford <[email protected]> Mon, 11 Aug 2025 22:20:03 -0400

Newsgroups	gmane.linux.debian.devel.documentation
Message-ID	<175496520390.3252.14736991914536591919.reportbug__35352.8395689622$1754966626$gmane$org@adolin.c-home.internal>

Package: release-notes
Severity: important
X-Debbugs-Cc: [email protected]

Dear Maintainer,

        With the release of Debian 13 "Trixie," mDNS resolution has been
disabled in systemd-resolved at a global level, apparently per bug
1098914. This can cause mDNS resolution to unexpectedly break in existing
setups. The changelog for the systemd-resolved package has documentation for
how to mask the new drop-in configuration file that causes this, but this
information was not included in the Debian 13 release notes.

As this is a breaking change that can cause local name resolution to fail
completely for users who are not using Avahi, I believe that this should be
included in the release notes, most likely in the "Issues to be aware of for
trixie" section.

Thank you,
Colin J Crawford