[Bug 1925761] Re: libnns-mymachines update breaks local mdns discovery

[Givrix]

> there's a really large delta between that and 245.4-ubuntu3.6, and you
very probably were running 245.4-ubuntu3.5 before, not 245.4-ubuntu3.

Yes I know, but I don't know any easy way to downgrade to 3.5, there is
only choice between 3 and 3.6.

Full journalctl or only specific service ?

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Title:
  libnns-mymachines update breaks local mdns discovery

Status in systemd package in Ubuntu:
  Incomplete

Bug description:
  After the last systemd update 245.4-ubuntu3.6 on 20.04 focal, I discovered I couldn't use .local network names anymore. All returning Name or service unknown.
  Nothing explicitly showing a problem in avahi-deamon systemd logs, no firewall activated, and no changes done to /etc/nsswitch.conf.

  After noticing those packages just had been updated, I downgraded systemd to 245.4-ubuntu3 through aptitude and it works again.
  So I'm pretty sure something's wrong with last package from focal-updates of libnss-mymachines.

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