ARPOP_REVREPLY
r->ifbr_arpf.brla_op == ARPOP_REVREPLY)
rule->ifbr_arpf.brla_op = ARPOP_REVREPLY;
if (ap->arp_op != htons(ARPOP_REVREPLY)) {
ntohs(ea.arp_op) != ARPOP_REVREPLY)
ea.arp_op != htons(ARPOP_REVREPLY))
case ARPOP_REVREPLY:
ap->arp_op = htons(ARPOP_REVREPLY);