Begin to add egress / arp support

p4src/headers.p4

@@ -23,6 +23,7 @@ const bit<16> TABLE_V6_NETWORKS = 3;
 const bit<16> TABLE_NAT46       = 4;
 const bit<16> TABLE_V4_NETWORKS = 5;
 const bit<16> TABLE_ARP         = 6;
+const bit<16> TABLE_ARP_EGRESS  = 7;
 
 
 const bit<16> TYPE_IPV4  = 0x0800;

p4src/static-mapping.p4

@@ -360,6 +360,19 @@ Echo or Echo Reply Message
         default_action = controller_debug_table_id(TABLE_ARP);
     }
 
+    table v4_arp_egress {
+        key = {
+            hdr.arp.dst_ipv4_addr: lpm;
+        }
+        actions = {
+            controller_debug_table_id;
+            set_egress_port;
+            NoAction;
+        }
+        size = ICMP6_TABLE_SIZE;
+        default_action = controller_debug_table_id(TABLE_ARP_EGRESS);
+    }
+
 
 	/********************** ROUTING (egress definiton) TABLES ***********************************/
 
@@ -432,7 +445,10 @@ Echo or Echo Reply Message
             }
             v4_networks.apply();             /* regular routing, egress */
         } else if(hdr.arp.isValid()) {
-            v4_arp.apply();
+            if(v4_arp.apply().hit) {
+                v4_arp_egress.apply();
+            }
+
         }
     }
 }