diff --git a/include/linux/if_packet.h b/include/linux/if_packet.h
index 1efa1cb..84e684e 100644
--- a/include/linux/if_packet.h
+++ b/include/linux/if_packet.h
@@ -53,6 +53,7 @@
 
 #define PACKET_FANOUT_HASH		0
 #define PACKET_FANOUT_LB		1
+#define PACKET_FANOUT_FLAG_DEFRAG	0x8000
 
 struct tpacket_stats {
 	unsigned int	tp_packets;