Refactor test, remove fragile solution with tcpdump started AFTER
the linklocal was activated, this opened for a race condition since
it was listening for a message sent once.
Now wait for the linklocal address instead.
This can now a days be inferred and isn't needed. Also, the interface
type in virtual testing is now etherlike not ethernet.
Signed-off-by: Richard Alpe <richard@bit42.se>
