[Bug 1901526] Re: On upgrade tries to replace /etc/systemd/resolved.conf

[Dan Streetman]

when you say "tries to replace" do you mean this:

Configuration file '/etc/systemd/resolved.conf'
 ==> Modified (by you or by a script) since installation.
 ==> Package distributor has shipped an updated version.
   What would you like to do about it ?  Your options are:
    Y or I  : install the package maintainer's version
    N or O  : keep your currently-installed version
      D     : show the differences between the versions
      Z     : start a shell to examine the situation
 The default action is to keep your current version.
*** resolved.conf (Y/I/N/O/D/Z) [default=N] ? 


that's what I see when upgrading with a modified conf file, and it's expected behavior. If that's what you are seeing, then there is no bug, just say "N" to keep your modified version, or say "Y" and then modify it again after upgrade is complete.

** Changed in: systemd (Ubuntu)
       Status: New => Incomplete

** Changed in: systemd (Ubuntu)
       Status: Incomplete => Invalid

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https://bugs.launchpad.net/bugs/1901526

Title:
  On upgrade tries to replace /etc/systemd/resolved.conf

Status in systemd package in Ubuntu:
  Invalid

Bug description:
  When upgrading from Ubuntu 20.04.1 to 20.10, the new package tries to
  replace resolved.conf which would break custom DNS configuration

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