I installed OMV on my Pi, and everything seems to work fine.
But my network card does not show up on the networks page.
And when I add it because I want to add static addresses for IPv4 and IPv6, then an error pops up when I press Apply:
Failed to execute command 'export PATH=/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin; export LANG=C; systemctl start 'networking' 2>&1' with exit code '1': Job for networking.service failed because the control process exited with error code.See "systemctl status networking.service" and "journalctl -xe" for details.
No matter what I change, I always get this message until I delete the network card again.
I tried both Ethernet and WLan, but it always ends up in getting this message.