check if the packet is for us or if we're promisc before we cut the vlan header out of the packet.
check if the packet is for us or if we're promisc before we cut the
vlan header out of the packet.

fixes rx on top of trunks on top of nics that dont do hw vlan tagging.

ok mpi@

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars