Comment 8 for bug 1829380

ocata:

I was able to reproduce the regression by rebooting the guest - I could not reproduce it any other way, by attaching/removing interface(s), setting their link up/down from the host side or from the guest side, adding/removing them to a bridge on the host, etc. On reboot, with qemu 1:2.8+dfsg-3ubuntu2.9~cloud5.1, after 2 reboots I was able to reproduce the guest being unable to use the interface. I stopped the guest, upgraded to 1:2.8+dfsg-3ubuntu2.9~cloud6, and repeated the test, and the guest had no problems even after 10 reboots.