Dr. Nikolaus Klepp wrote: > Remove or comment out all lines except these 2, then reboot: > > auto lo > iface lo inet loopback good catch Dr. Klepp - I have completely forgotton that there are still people on desktops with entries in the file. When I read your question it lighted up again - to manage the networks by NetworkManager there should be no entries in there (except lo as pointed by you)