Comment 12 for bug 1458322

I tried it out on 1.2.2, since that's the version I have to work with. I also had to patch applet-device-ethernet.c , otherwise it still listed the header for each interface. Pushed my version up to https://github.com/ohthehugemanatee/network-manager-applet for convenience.

I only applied this hiding behavior to ethernet interfaces, because this ticket is specific to virtual ethernet interfaces from docker, vagrant, etc. I'm sure there are people who would like to hide other unmanaged interfaces, too. TBH I would prefer a flag for "show-unmanaged", but that discussion probably belongs in a separate ticket.

Patch attached. Sorry if the format isn't right, this is my first contribution here.