I have seen this for quite some time as well. Usually connected to both wifi and cabled network at work (while laptop is docked), which is quite handy for when I go to meetings and undock my laptop, but will stay online since I am also on wifi.
After a while though, and after re-docking the laptop, the metric for the connections change and the wifi takes priority (eth0 gets 20100 metric, wifi stays on 600). I am still online though, but the wifi is quite a bit slower at times. Solution for now is to manually re-click my wired connection in nm- applet, or just disable auto-connect of the wifi altogether at work. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1788659 Title: network manager assigns ethernet default route metric of 20100 Status in network-manager package in Ubuntu: Confirmed Bug description: After upgrading from 16.04 to 18.04, when I boot with an ethernet cable connected, Ubuntu prefers to use the wifi interface over the ethernet interface. Wifi is assigned the normal metric of 600 for both of its routing table entries. However ethernet is assigned a metric of 20100. I edited the connection details via nmcli to manually set the ethernet metric to 100. After a reboot, the link route (for the LAN subnet) correctly has a metric of 100. But the default route for eth0 is still 20100. nm-applet shows the wifi icon, correctly indicating that the default route is over wifi rather than ethernet. The only fix is to manually set the route after every reboot, or turn off wifi. This is a regression from 16.04. network-manager 1.10.6-2ubuntu1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1788659/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
