diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 4fa5dfe..78a0d06 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -469,6 +469,9 @@
 extern int			ip6_dst_lookup(struct sock *sk,
 					       struct dst_entry **dst,
 					       struct flowi *fl);
+extern int			ip6_dst_blackhole(struct sock *sk,
+						  struct dst_entry **dst,
+						  struct flowi *fl);
 extern int			ip6_sk_dst_lookup(struct sock *sk,
 						  struct dst_entry **dst,
 						  struct flowi *fl);