So, there's a problem with how we figure out the NetworkManager
connection to use in setup_tap_static: it expects the first
connection in the list to be the right one, but this is only
actually true so long as it's *active*. When we're in the tap
case, it's usually not going to actually *work* out of the box
on boot (or else we wouldn't need setup_tap_static at all...),
so some time after boot, NetworkManager gives up on it and marks
it as inactive. And after that, setup_tap_static won't work any
more.
I never noticed this as a problem before because usually we do
setup_tap_static before that point. But it seems in the vnc
client tests, on aarch64, desktop boot and login is slow enough
that by the time we switch to a VT and try to setup the network,
we're very close to that cutoff, and sometimes miss it.
This, I hope, avoids the problem by doing the network setup in
that test before we deal with the desktop login, then doing the
desktop login, then doing the actual VNC bits.
The alternative here would be to figure out a better way to do
setup_tap_static, but I can't.
Signed-off-by: Adam Williamson <awilliam@redhat.com>
