It seems the 15.04 version of network manager (0.9.10) is now quite out- of-date (!).
https://wiki.gnome.org/Projects/NetworkManager/ From https://download.gnome.org/sources/NetworkManager/1.0/NetworkManager-1.0.4.news * The management of devices can now be controlled with udev rules. The veth devices as well as the virtual Ethernet devices of various virtualization tools (VMWare, VirtualBox, Parallels Workstation) are now ignored by default. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1485558 Title: NetworkManager breaks vboxnet* connections since 15.04, worked in 14.04 and 14.10, nm-applet fills with irrelevant entries. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1485558/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
