diff --git a/ospf6d/ospf6_route.h b/ospf6d/ospf6_route.h
index 5835794..d9456a1 100644
--- a/ospf6d/ospf6_route.h
+++ b/ospf6d/ospf6_route.h
@@ -158,6 +158,7 @@
 #define OSPF6_ROUTE_BEST             0x08
 #define OSPF6_ROUTE_ACTIVE_SUMMARY   0x10
 #define OSPF6_ROUTE_DO_NOT_ADVERTISE 0x20
+#define OSPF6_ROUTE_WAS_REMOVED      0x40
 
 struct ospf6_route_table
 {