diff --git a/src/MESA_jump_layer.cpp b/src/MESA_jump_layer.cpp
index c24a4f0..608588b 100644
--- a/src/MESA_jump_layer.cpp
+++ b/src/MESA_jump_layer.cpp
@@ -806,7 +806,12 @@ static int ipv6_jump_to_layer(const char *raw_data,  int raw_layer_type, int exp
 	UINT8 *next_hdr_ptr = (UINT8 *)a_packet + sizeof(struct mesa_ip6_hdr);	
 	int skip_len = 0;
 	int offset_to_ip6 = 0;
-	
+
+	if(a_packet->ip6_flags[0]!= 0x60)
+	{
+		return -1;
+	}
+
 	if(raw_layer_type == expect_layer_type){
 		return 0;
 	}