If anyone is able to reproduce this, I have a debug kernel at this ppa: https://launchpad.net/~ddstreet/+archive/ubuntu/lp1403152
it prints a debug line when any loopback interface is dev_put/dev_hold, which may help show where the extra loopback reference is coming from when this problem happens. If anyone can reproduce the problem using the debug kernel, please attach the logs (and/or sosreport). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1403152 Title: unregister_netdevice: waiting for lo to become free. Usage count To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1403152/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
