A set of 65535 (0xFFFF) causes the priority value specified in
ctPriorityExtPktTypePriority to apply to all packets
of the type specified by ctPriorityExtPktType. Any
value between 1 and 4095 is a valid VLAN ID (IEEE 802.1q)
and causes ctPriorityExtPktTypePriority to only apply
to packets that are of ctPriorityExtPktType type and are
members of the IEEE 802.1q VLAN specified by the value set.