(In reply to Ansgar Radermacher from comment #8) > I forgot to mention that I did not have this problem with OpenSuse 13.1. > Might be related to the old bug > https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/199140 Or rather this one: http://forums.debian.net/viewtopic.php?f=10&t=116219 I found a workaround: add the following lines to /etc/networkmanager/NetworkManager.conf [keyfile] unmanaged-devices=interface-name:vmnet1;interface-name:vmnet8