diff --git a/include/linux/neighbour.h b/include/linux/neighbour.h
index 8730d5d..12c9de1 100644
--- a/include/linux/neighbour.h
+++ b/include/linux/neighbour.h
@@ -31,6 +31,7 @@
  *	Neighbor Cache Entry Flags
  */
 
+#define NTF_USE		0x01
 #define NTF_PROXY	0x08	/* == ATF_PUBL */
 #define NTF_ROUTER	0x80