The upgrade to UCS 4.3-0 from UCS 4.2-4 pauses reproducibly at the following step: nfs-kernel-server (1:1.3.4-2.1A~4.3.0.201711222152) wird eingerichtet ... Created symlink /etc/systemd/system/multi-user.target.wants/nfs-server.service → /lib/systemd/system/nfs-server.service. Warning: nfs-kernel-server.service changed on disk. Run 'systemctl daemon-reload' to reload units. It does not continue for at least 10 minutes until I manually stop nfs-kernel-server.service with systemctl.
*** This bug has been marked as a duplicate of bug 47313 ***