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 Ubuntu Bugs, which is subscribed to 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1378416/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
