• Bug#1101975: systemd-resolved: resolved no longer resolves mdns, despit

    From Helmut Grohne@21:1/5 to Herbert Snorrason on Thu Apr 3 12:50:02 2025
    Hi,

    On Thu, Apr 03, 2025 at 10:21:07AM +0000, Herbert Snorrason wrote:
    After an upgrade today, resolved appears to have stopped resolving mDNS queries,
    despite previously having done so and still being configured to do so. This appears to be the result of a new override file that appeared in the
    package. Unlike multiple other changes that require action to maintain an existing configuration, I did not get any sort of alert in the upgrade process.

    This is correct. The Debian Technical Committee asked the systemd
    maintainers to disable mDNS support in the default configuration. The
    chosen implementation was to place an override file.

    I am aware that I can alter my configuration to override the override, but I do
    have to wonder if it isn't more appropriate for the package to alter the default
    configuration file than to override whatever is in the configuration file. At the very least, it should be possible to alert users to the need for a configuration change, rather than assuming that users will know why things have
    broken.

    The alternative of changing the default at compile time was the method preferred by the Debian Technical Committee, but that was not acceptable
    by the systemd maintainers.

    I agree that the disablement deserves a NEWS fragment. Do you use apt-listchanges to display such NEWS? Would that have made you aware of
    the problem? Would adding a note to Debian's release notes help here?

    Helmut

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