[Pkg-utopia-maintainers] Bug#992048: NetworkManager-wait-online.service: fails to start correctly

[Brian May]

OK, I think I worked it out.

I followed instructions from
https://www.cyberciti.biz/faq/how-to-add-network-bridge-with-nmcli-networkmanager-on-linux/

On how to create a bridge.

These instructions while they tell you to shutdown the "Wired connection
1":

sudo nmcli con down "Wired connection 1"

They neglect to tell you how to ensure that the wired network connection
doesn't come up again after a reboot.

This meant that the bridge couldn't come up:

br0: connecting (getting IP configuration) to bridge-br0
        "br0"
        bridge, 06:55:A7:3D:DE:04, sw, mtu 1500

Which is why this service wasn't starting.

Once I shutdown the "Wired Connection 1" the "br0" could come up and
this service started working.

network-manager really needs to be a bit more transparent when things go
wrong. Such as printing a message "Waiting for br0 to come online" would
have really helped.
-- 
Brian May <bam at debian.org>