Patch for >1 match in hints file

[A.L.M.Buxey at lboro.ac.uk]

Hi,

> Our current switches get very upset if you send >1 vlan tag to them; and
> since the only legit use-case we can think of for >1 host on a port is
> virtual machines in bridged mode, we adopt the approach above.

multi-host mode Sir? yes, we've seen those issues :-(

alan