+ rv = vnet_add_del_ip4_arp_change_event
+ (vnm, arp_change_data_callback,
+ mp->pid, &mp->address /* addr, in net byte order */ ,
+ vpe_resolver_process_node.index,
+ IP4_ARP_EVENT, event - am->arp_events, 1 /* is_add */ );
+
+ if (rv)
+ {
+ pool_put (am->arp_events, event);
+ goto out;
+ }