This looks like the culprit, according to Mathieu, -12 indicates object- not-found from libnl ( netlink ):
Oct 7 15:14:44 ubuntu-phablet NetworkManager[1581]: <error> [1412694884.484495] [nm-system.c:965] add_ip4_route_to_gateway(): (ccmni0): failed to add IPv4 route to gateway (-12) -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to network-manager in Ubuntu. https://bugs.launchpad.net/bugs/1378416 Title: turned off wifi to test 3g I see H in the indicator but I recieve nothing from the system Status in “network-manager” package in Ubuntu: Confirmed Bug description: STEPS: 1. Install RTM88 on krillin 2. Use the system a litlle on wifi 3. Pull down the indicator network 4. Disable Wifi EXPECTED: I expect the system to seemless flip over to using 3g ACTUAL: I got no page (see screen shot) I tried pinging google and got ping: unknown host google.com ip route gave no feedback phablet@ubuntu-phablet:~$ nmcli dev DEVICE TYPE STATE /ril_1 gsm disconnected /ril_0 gsm connected wlan0 802-11-wireless unavailable Devices is correct. The debug.txt in comment #3 clearly shows that mobile data is connected via the list-modems output and list-contexts output. This output also agrees with the nmcli output which shows /ril_0 as connected. The smoking gun here looks to be the routing table, which is empty. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1378416/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
