[Bug 1761994] Re: Shift of conntrackd to systemd notification causes upgrade issues from Xenial

[Corey Bryant]

Hi Mark,

Thanks for reporting this.

Does this look like the error that you hit?
https://paste.ubuntu.com/p/4bv3PGBfMF/

I wasn't able to reproduce this using the default package config when
upgrading conntrackd from xenial to bionic, however if I remove "Systemd
on" from the bionic config file (/etc/conntrackd/conntrackd.conf), it
fails due to timeout as shown in the above paste.

I have the broken package built in the following PPA in case anyone
wants to test:

sudo add-apt-repository ppa:corey.bryant/bionic-queens
sudo apt update

Note: That particular issue appears to have been fixed in artful and
bionic via https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=835384.
However if you're not using the default config provided by the bionic
package then it's possible you'd hit it on upgrade.

Thanks,
Corey

** Bug watch added: Debian Bug tracker #835384
   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=835384

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https://bugs.launchpad.net/bugs/1761994

Title:
  Shift of conntrackd to systemd notification causes upgrade issues from
  Xenial

Status in conntrack package in Ubuntu:
  New

Bug description:
  
  In Bionic, conntrackd configuration needs to be updated to use systemd notification otherwise we get problems during the upgrade process.

  Ultimately, it requires putting up with broken debconf scripts in the
  upgrade process, editing the file to reflect the new location, and
  rebooting.

  It may also have to do with the UNIX socket configuration for
  conntrackd which changed between 16.04 and 18.04, to:

          UNIX {
                  Path /var/run/conntrackd.sock
                  Backlog 20
          }

  I think it was previously conntrackd.ctl.

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