Here's a reference with some relevance for the present report. https://live.gnome.org/NetworkManager/SystemSettings#ifupdown
"The ifupdown plugin also uses [...] NetworkManager.conf (0.8.1 and later) for some configuration. All ifupdown-specific options go in a "[ifupdown]" section. If the "managed" key is set to "false", then any device listed in /etc/network/interfaces will be completely ignored by NetworkManager. Remember that NetworkManager controls the default route, so because the device is hidden, NetworkManager will assign the default route to some other device." -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/47379 Title: NM assigns a lower metric to the default route over wlan than ifup assigns to the default route over eth. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/47379/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
