diff --git a/entry/src/kni_entry.cpp b/entry/src/kni_entry.cpp
index 12ea48d..58a189e 100644
--- a/entry/src/kni_entry.cpp
+++ b/entry/src/kni_entry.cpp
@@ -77,7 +77,6 @@ struct dup_traffic_dabloom_key{
     	struct stream_tuple4_v6 v6;
 	}addr;
 	uint16_t ipid;
-	uint8_t ttl;
 	uint32_t seq;
 	uint32_t ack_seq;
 	uint32_t timestamp;	
@@ -267,7 +266,6 @@ static int dup_traffic_dabloom_key_get(struct pkt_info *pktinfo, struct dup_traf
 		key->addr.v4.daddr = iphdr->daddr;
 		key->addr.v4.source = tcphdr->source;
 		key->addr.v4.dest = tcphdr->dest;
-		key->ttl = iphdr->ttl;
 		key->ipid = iphdr->id;
 	}
 	return 0;