diff --git a/include/conf/conn.h b/include/conf/conn.h
index 86da70b66..0e5fa59dc 100644
--- a/include/conf/conn.h
+++ b/include/conf/conn.h
@@ -62,6 +62,7 @@ struct ip_vs_conn_entry {
     uint16_t            in_af;
     uint16_t            out_af;
     uint16_t            proto;
+    uint16_t            syncid;
     union inet_addr     caddr;
     union inet_addr     vaddr;
     union inet_addr     laddr;
diff --git a/include/ipvs/conn.h b/include/ipvs/conn.h
index 9270f8d78..e44108a84 100644
--- a/include/ipvs/conn.h
+++ b/include/ipvs/conn.h
@@ -99,6 +99,7 @@ struct dp_vs_conn {
 
     struct dpvs_timer       conn_sync_timer;
     struct timeval          conn_sync_timeout;
+    uint16_t                syncid;
     queueid_t               qid;    /* used in session synchronization*/
     
     lcoreid_t               lcore;
diff --git a/include/ipvs/sync.h b/include/ipvs/sync.h
index 104ebdb2c..81177d946 100644
--- a/include/ipvs/sync.h
+++ b/include/ipvs/sync.h
@@ -56,6 +56,7 @@ struct dp_vs_sync_conn {
     struct dp_vs_seq        fnat_seq;
     uint32_t                rs_end_seq;
     uint32_t                rs_end_ack;
+    uint16_t                syncid;
 };
 
 struct dp_vs_sync_head {
diff --git a/src/ipvs/ip_vs_conn.c b/src/ipvs/ip_vs_conn.c
index 98281bab3..151290e33 100644
--- a/src/ipvs/ip_vs_conn.c
+++ b/src/ipvs/ip_vs_conn.c
@@ -743,6 +743,7 @@ struct dp_vs_conn * dp_vs_conn_copy_from_sync(void *param, struct dp_vs_dest *de
     new->rs_end_seq = sync_conn->rs_end_seq;
     new->rs_end_ack = sync_conn->rs_end_ack;
 
+    new->syncid = sync_conn->syncid;
     new->flags  = sync_conn->flags | DPVS_CONN_F_SYNCED;
     new->state  = sync_conn->state;
     new->qid    = sync_conn->qid;
@@ -1353,6 +1354,9 @@ static inline void sockopt_fill_conn_entry(const struct dp_vs_conn *conn,
     entry->lport = conn->lport;
     entry->dport = conn->dport;
     entry->timeout = conn->timeout.tv_sec;
+    if (conn->flags & DPVS_CONN_F_SYNCED) {
+        entry->syncid = conn->syncid;
+    }
 }
 
 static int sockopt_conn_get_specified(const struct ip_vs_conn_req *conn_req,
diff --git a/src/ipvs/ip_vs_sync.c b/src/ipvs/ip_vs_sync.c
index 6c8569ae6..b5a06084f 100644
--- a/src/ipvs/ip_vs_sync.c
+++ b/src/ipvs/ip_vs_sync.c
@@ -100,6 +100,7 @@ void dp_vs_sync_conn_enqueue(struct dp_vs_conn *cp, dp_vs_sync_type type)
     s->daddr = cp->daddr;
     s->qid   = cp->qid;
     s->lcore = cp->lcore;
+    s->syncid = g_dp_vs_sync_conf.syncid;
 
     rte_memcpy(&s->fnat_seq, &cp->fnat_seq, sizeof(struct dp_vs_seq));
     s->rs_end_seq = cp->rs_end_seq;
diff --git a/tools/ipvsadm/ipvsadm.c b/tools/ipvsadm/ipvsadm.c
index 7c94daa7f..c1aff2681 100644
--- a/tools/ipvsadm/ipvsadm.c
+++ b/tools/ipvsadm/ipvsadm.c
@@ -1573,9 +1573,15 @@ static void print_conn_entry(const ipvs_conn_entry_t *conn_entry,
                     ntohs(conn_entry->dport), conn_entry->proto, format)))
 		goto exit;
 
-	printf("[%d]%-3s %-6s %-11s %-18s %-18s %-18s %s\n",
-			conn_entry->lcoreid, proto_str, time_str, conn_entry->state,
-			cname, vname, lname, dname);
+    if (conn_entry->syncid) {
+        printf("[%d]%-3s %-6s %-11s %-18s %-18s %-18s %-18s syncid:%d\n",
+                conn_entry->lcoreid, proto_str, time_str, conn_entry->state,
+                cname, vname, lname, dname, conn_entry->syncid);
+    } else {
+    	printf("[%d]%-3s %-6s %-11s %-18s %-18s %-18s %s\n",
+    			conn_entry->lcoreid, proto_str, time_str, conn_entry->state,
+    			cname, vname, lname, dname);
+    }    
 exit:
 	if (cname)
 		free(cname);