diff --git a/netpfga/minip4/src/minip4_solution-nat64.p4 b/netpfga/minip4/src/minip4_solution-nat64.p4
index 7e12807..d5ed684 100644
--- a/netpfga/minip4/src/minip4_solution-nat64.p4
+++ b/netpfga/minip4/src/minip4_solution-nat64.p4
@@ -44,6 +44,25 @@ parser TopParser(packet_in b,
                  out digest_data_t digest_data,
                  inout sume_metadata_t sume_metadata) {
     state start {
+
+        /* initaliase metadata */
+	    meta.ingress_port = 0;
+	    meta.task = 0;
+	    meta.switch_task = 0;
+	    meta.chk_icmp6_na_ns = 0;
+	    meta.chk_icmp6 = 0;
+	    meta.chk_icmp = 0;
+	    meta.chk_ipv4 = 0;
+	    meta.chk_udp_v4 = 0;
+	    meta.chk_udp_v6 = 0;
+	    meta.chk_tcp_v4 = 0;
+	    meta.chk_tcp_v6 = 0;
+	    meta.length_without_ip_header = 0;
+	    meta.cast_length = 0;
+	    meta.table_id = 0;
+
+
+
         b.extract(p.ethernet);
         digest_data.unused = 0;