The FreeBSD kernel treats them specially, just like link-local (that's
probably why it calls them "interface-local" instead of "node-local").
So instead let's use a random address, which will avoid multiple
tst_qudpsocket, when run on the same network at the same time,
receiving each other's datagrams. It could happen, considering this test
has an 800-second timeout limit.
Change-Id: Ifb5969bf206e4cd7b14efffd14fb592a3166547e
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
c4f397ee11