Am 21.04.2015 um 15:42 schrieb Christian Seiler:
There is something called systemd-networkd, which is not
part of Jessie's systemd version, but will (probably) be
part of future Debian versions. This offers an alternative
way to configure networking.
Note, however, that systemd-networkd by default does not
touch any network interfaces, you have to tell it explicitly
to do something - so even if that were to be installed, as
long as the old networking scripts still exist, they'd still
be used instead of systemd's component - and only if you
explicitly configure something there will it actually do
anything.
This doesn't concern Jessie anyway, because it doesn't
contain that program.
Not quite correct. The systemd package in jessie does ship
systemd-networkd, but it is disabled by default.
If you want to use networkd, you'd have to run
"systemctl enable systemd-network[d].service"
and configure it.