I should mention that as a side effect, network interfaces are assigned different names. For instance, on my machine, ‘eth0’ is now ‘eno1’.
The rationale is given at: http://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames/ The naming scheme is described at: http://cgit.freedesktop.org/systemd/systemd/tree/src/udev/udev-builtin-net_id.c#n20 Ludo’.
