diff --git a/ospf6d/ospf6_asbr.h b/ospf6d/ospf6_asbr.h
index 6aab1df..72e4914 100644
--- a/ospf6d/ospf6_asbr.h
+++ b/ospf6d/ospf6_asbr.h
@@ -48,6 +48,8 @@
 
   struct in6_addr forwarding;
   /* u_int32_t tag; */
+
+  unsigned int ifindex;
 };
 
 /* AS-External-LSA */