[18.04] No network after moving VM from Hyper-V 2012 to 2019

[Helmut Schneider]

Am 04.11.2019 um 12:01 schrieb Liam Proven:
 > > On Mon, 4 Nov 2019 at 10:46, Helmut Schneider <jumper99 at gmx.de> wrote:
 >> >>
 >> >> I moved an Ubuntu 18.04 VM from Hyper-V 2012 to Hyper-V 2019 and 
changed
 >> >> the network interfaces to teaming on Windows. Now Ubuntu neither 
brings
 >> >> the interface up on boot nor sets an IP (static using netplan) . A
 >> >> Debian 9.11 machine and a freshly installed 18.04 do fine.
 >> >>
 >> >> Where do I start?
 > >
 > > Well, does it work _without_ adapter teaming?

I do not have an adapter left so I can't test without breaking the
host-side teaming (Hyper-V virtual switch). But as said a fresh install
works fine. Any module that must be loaded?