I think that was worth trying because this guide
(yeah I know, Centos8)
says I should be OK to delete the ethernet connection with the static IP after creating and bringing up the bridge but if I disable or delete entirely the ethernet connection, I can no longer SSH into the server.
nm has 5 modes for eth connections:
Disable
Automatic
Link-local
Manual
Shared
Seems like I might have to speak to the nm devs to see if they’re aware of any issues with creating bridges under 20.04?