This object maps ARP packets specifically to one of the device's forwarding classes, using the same named priority scale (be, l2, af, l1, h2, ef, h1, nc) as the general DSCP remarking table but dedicated to ARP traffic. An administrator sets this to ensure ARP requests and replies, which are critical for basic connectivity but easy to overlook in QoS policy, get appropriate priority treatment during congestion. For example, setting this object to nc(8) (network control) ensures ARP packets are handled with the highest-priority forwarding class so address resolution keeps working even under heavy traffic load.