fff-network: Fix mac adresses not set during merge/rebase

Some MAC adresses were forgotten/not updated in a previous
patch. This is fixed now.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
Reviewed-by: Tim Niemeyer <tim@tn-x.org>
Reviewed-by: Fabian Bläse <fabian@blaese.de>