Comment 12 for bug 1918265

I can confirm same problem has just hit us. Gen 2 VM, linux-generic kernel running on Hyper-V 2016. Had been happily running for many months. Did a reboot and it failed to boot. Disconnected all of the interfaces from the virtual switch, then it booted. This particular VM is our DHCP server, so fairly critical. Think we're going to need to look at something other than Ubuntu now, as need to rely on this in production :(