Bug#782142: systemd: Tries to mount NFS shares twice (?)

[Santiago Vila]

On a computer which is a little bit faster than the others I see this
instead:

ifup[429]: /sbin/ifup: interface eth0 already configured

I can even reproduce it after *every* reboot:

* One computer (faster than the others) says "eth0 already configured".
* The others (older, slower) say "/home/nfs is busy or already mounted".

Every time.