coTURN service won't start after system startup

Development
1

Summary
In every Freedombox setup I made so far I experienced this problem after installing Matrix-Synapse with coTURN:

The coTURN service fails to start after the system startup and I had to check and start it manually in cockpit.

Solution
After a quick internet search I found a solution for me which I believe could also be used as standard setting(?).

Change the after setting in /lib/systemd/system/coturn.service from network.target to network-online.target. This solved the problem for me.

2

There was a (different) fix for this issue included in FreedomBox 22.4:

Do you also have the following settings?

listening-ip = ::
listening-ip = ::1
3

Yes these settings were included in my installation (Freedombox 22.7). The error persisted. Only the solution above solved it for me…