Can you provide your NetworkManager.conf as well as your /etc/network/interface file? Normally these two files should look like this:
1. NetworkManager.conf: [main] plugins=ifupdown,keyfile,ofono dns=dnsmasq [ifupdown] managed=false 2. interfaces: auto lo iface lo inet loopback That is to say, have dnsmasq and ifupdown plugins enabled and set [ifupdown] to "managed=false", at the same time don't include anything other than "lo" in /etc/network/interfaces. ** Changed in: network-manager (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1658921 Title: NetworkManager does not manage wired connection To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1658921/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs