A set of 65335 (0xFFFF) causes the priority value specified in
ctPriorityExtMACPriority to apply to all packets
matching the criteria specified by ctPriorityExtMACAddr,
ctPriorityExtAddrType, and ctPriorityExtMACPktType. Any
value between 1 and 4095 is a valid VLAN ID (IEEE 802.1q)
and causes ctPriorityExtMACPriority to only apply
to packets that are of matching the above criteria and that are
members of the IEEE 802.1q VLAN specified by the value set.