diff --git a/ospf6d/ospf6d.h b/ospf6d/ospf6d.h
index b6f1b73..2ac6300 100644
--- a/ospf6d/ospf6d.h
+++ b/ospf6d/ospf6d.h
@@ -49,6 +49,9 @@
 #endif /* IPV6_DROP_MEMBERSHIP */
 #endif /* ! IPV6_LEAVE_GROUP */
 
+#define MSG_OK    0
+#define MSG_NG    1
+
 /* cast macro: XXX - these *must* die, ick ick. */
 #define OSPF6_PROCESS(x) ((struct ospf6 *) (x))
 #define OSPF6_AREA(x) ((struct ospf6_area *) (x))