DUT matches and processes incoming untagged packets for VLAN id

For certain flows with a match on the VLAN ID, even untagged packets are matched. This matching occurs on untagged ports only. The existing behavior exists because L2 hardware adds the VLAN id and VLAN priority meta-information irrespective of whether the packet came in tagged or untagged. Flows that can be accelerated into hardware are put into hardware, whereas flows that cannot be accelerated in hardware are put into software. The observed behavior is observed for hardware and software flows.