This sounds similar to bug #1410113, which is a more generic bug. I'm not going to mark this a duplicate however as it has a reproducible scenario.
Also confirmed this bug for RTM, as I reproduced it on the third try. I verified that there was a mobile data connection and that it worked ( ie. I could ping ubuntu.com ), activated a WiFi connection, verified the routing table, and then disabled WiFi. On the third cycle, I ended up with an empty routing table: phablet@ubuntu-phablet:~$ netstat -run Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface ...that said, at some point, it looks like the system did recover at some later point, as it appears to have magically healed itself, and I know have a valid routing table, and usable mobile data connection. I will continue to work on reproducing, and will add logs, and other data if/when I can do so again. phablet@ubuntu-phablet:~$ system-image-cli -i current build number: 20 device name: krillin channel: ubuntu-touch/ubuntu-rtm/14.09 last update: 2015-03-26 15:44:56 version version: 20 version ubuntu: 20150312 version device: 20150310-3201c0a version custom: 20150216-561-29-186 ** Changed in: network-manager (Ubuntu RTM) Importance: High => Critical ** Changed in: network-manager (Ubuntu) Importance: High => Critical -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1436427 Title: Turning off WiFi doesn't set a route after the modem connects data To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1436427/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
