Description Lukas Zumvorde 2022-08-04 13:58:14 CEST

A customer has several UCS systems on which the UMC is not installed. During the Upgrade to UCS 5 the package univention-network-common got updated from 11.0.0-2 to 11.0.0-3. This update contained two bug fixes. One of those (https://forge.univention.org/bugzilla/show_bug.cgi?id=52959) introduced the issue by assuming that univention-management-console-web-server is installed, despite not being a dependency. 
I do not think that univention-management-console-web-server should be a dependency. We should strife to minimize dependencies, especially if they involve services that are potentially externally available.

The issue he experienced was logges in /var/log/univention/updater.log
```
insserv: Service univention-management-console-web-server has to be enabled to start service univention-network-common
insserv: exiting now!
update-rc.d: error: insserv rejected the script header
dpkg: Fehler beim Bearbeiten des Paketes univention-network-common (--configure):
…
dpkg: Abhängigkeitsprobleme verhindern Konfiguration von univention-ifplugd:
univention-ifplugd hängt ab von univention-network-common (= 11.0.0-3A~4.4.0.202207201501); aber:
Paket univention-network-common ist noch nicht konfiguriert.

dpkg: Fehler beim Bearbeiten des Paketes univention-ifplugd (--configure):
Abhängigkeitsprobleme - verbleibt unkonfiguriert
…
Fehler traten auf beim Bearbeiten von:
univention-network-common
univention-ifplugd
```
The offending line from the for for the bug 52959 is 
```
# Required-Start:    $network $remote_fs univention-management-console-web-server apache2
```
in univention-network-common.init

The package univention-network-common has the dependencies
 python-netifaces,
 python-univention-lib,
 univention-config (>= 8.0.2),
 ${misc:Depends},
 ${python:Depends},

This issue currently necessitates a fork of the package for a customer. We want to avoid this.