For me the situation is slightly different but the result is the same: Connect to WiFi - internet connection works Connect LAN cable (note that wifi is still active and nm sets up eth0 correctly) - internet connection breaks, although route -n shows both interfaces and routes.
Expected: when I connect eth0, it is preferred over wifi (either with metric or disconnecting wifi entirely, I don't care) and thus routing works as normal. -- 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/1450652 Title: 15.04: no route when connected to both WiFi and Ethernet Status in network-manager package in Ubuntu: Confirmed Bug description: Steps to reproduce =============== 1) Enable both a WiFi connection and plug into Ethernet 2) Test your network connectivity or run `route` Expected results ============= NetworkManager should prefer the wired connection over the WiFi connection, and `route` should return something like this: $ route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface default 10.17.75.1 0.0.0.0 UG 1024 0 0 wlan0 10.17.75.0 * 255.255.255.0 U 0 0 0 wlan0 link-local * 255.255.0.0 U 1000 0 0 wlan0 (To get the above results on Vivid, I had to unplug my Ethernet.) Actual results =========== `route` will produce no results and your connectivity will be broken Work-arounds =========== As soon as you disable either the WiFi or unplug from Ethernet, you will again have a route and your network connectivity will work. This is a regression from Trusty and Utopic. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: network-manager 0.9.10.0-4ubuntu15.1 ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3 Uname: Linux 3.19.0-15-generic x86_64 ApportVersion: 2.17.2-0ubuntu1 Architecture: amd64 CurrentDesktop: Unity Date: Thu Apr 30 16:00:09 2015 IfupdownConfig: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback IpRoute: default via 10.17.75.1 dev wlan0 proto static metric 1024 10.17.75.0/24 dev wlan0 proto kernel scope link src 10.17.75.247 169.254.0.0/16 dev wlan0 scope link metric 1000 NetworkManager.state: [main] NetworkingEnabled=true WirelessEnabled=true WWANEnabled=true WimaxEnabled=true SourcePackage: network-manager UpgradeStatus: No upgrade log present (probably fresh install) nmcli-con: NAME UUID TYPE TIMESTAMP TIMESTAMP-REAL AUTOCONNECT READONLY DBUS-PATH ACTIVE DEVICE STATE ACTIVE-PATH Wired connection 1 4ff8582e-2864-4729-877e-52b037de1ee8 802-3-ethernet 1430431120 Thu 30 Apr 2015 03:58:40 PM MDT yes no /org/freedesktop/NetworkManager/Settings/1 no -- -- -- system76_5g 74de1f59-702b-4d15-9803-82b281989bed 802-11-wireless 1430431008 Thu 30 Apr 2015 03:56:48 PM MDT yes no /org/freedesktop/NetworkManager/Settings/0 yes wlan0 activated /org/freedesktop/NetworkManager/ActiveConnection/1 nmcli-dev: DEVICE TYPE STATE DBUS-PATH CONNECTION CON-UUID CON-PATH wlan0 wifi connected /org/freedesktop/NetworkManager/Devices/2 system76_5g 74de1f59-702b-4d15-9803-82b281989bed /org/freedesktop/NetworkManager/ActiveConnection/1 eth0 ethernet unavailable /org/freedesktop/NetworkManager/Devices/1 -- -- -- lo loopback unmanaged /org/freedesktop/NetworkManager/Devices/0 -- -- -- nmcli-nm: Error: command ['nmcli', '-f', 'all', 'nm'] failed with exit code 2: Error: Object 'nm' is unknown, try 'nmcli help'. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1450652/+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