diff --git a/ospf6d/ospf6_interface.h b/ospf6d/ospf6_interface.h
index cf758c0..2d1ff34 100644
--- a/ospf6d/ospf6_interface.h
+++ b/ospf6d/ospf6_interface.h
@@ -124,6 +124,15 @@
 #define OSPF6_INTERFACE_DISABLE      0x01
 #define OSPF6_INTERFACE_PASSIVE      0x02
 
+/* default values */
+#define OSPF6_INTERFACE_HELLO_INTERVAL 10
+#define OSPF6_INTERFACE_DEAD_INTERVAL  40
+#define OSPF6_INTERFACE_RXMT_INTERVAL  5
+#define OSPF6_INTERFACE_COST           1
+#define OSPF6_INTERFACE_PRIORITY       1
+#define OSPF6_INTERFACE_TRANSDELAY     1
+#define OSPF6_INTERFACE_INSTANCE_ID    0
+
 
 /* Function Prototypes */