Comment 0 for bug 1868892

If one creates e.g. /etc/systemd/network.cu and /etc/systemd/network.fc and symlinks /etc/systemd/network to one of them, network setup will fail on reboot, because /usr/share/initramfs-tools/hooks/udev does a very poor job: it simply checks for a directory instead of the link files and therefore skips copying required files to the ram image. Another poor job is done when copying the files to the ram image: instead of following symlinks it copies them as which in turn makes them useless, because it does not copy the related dirs and thus the symlinks point to nothing. So keeping the system in an consistent state which such poor scripts is very hard, asking for trouble.

Suggested fix is attached.