> I don't know who brings the interface up too early, I searched in > udev/systemd and ifupdown, but couldn't find out who is responsible.
I guess the problem happens in the function "ifup_hotplug" in /etc/init.d/networking. It sets the link to up for all "allow-hotplug" interfaces, thus breaking my expectation that the system leaves the interfaces alone unless I tell it to do otherwise. Christoph
