diff --git a/p4src/headers.p4 b/p4src/headers.p4
index 270a4d1..3db1b4b 100644
--- a/p4src/headers.p4
+++ b/p4src/headers.p4
@@ -195,6 +195,7 @@ struct headers {
     icmp6_t          icmp6;
     icmp6_na_ns_t    icmp6_na_ns;
     icmp6_option_link_layer_addr_t   icmp6_option_link_layer_addr;
+    arp_t arp;
 }