Specify whether frames can hit the action according to their ARP/RARP hardware address space (HRD) settings.
default: 2,
0: ARP/RARP frames where the HLD is not equal to Ethernet(1).
1: ARP/RARP frames where the HLD is equal to Ethernet(1).
2: Any - Don't care.
3: No data.
range : 0 - 2