diff --git a/ospf6d/ospf6_top.h b/ospf6d/ospf6_top.h
index 866f92f..d6f4bf0 100644
--- a/ospf6d/ospf6_top.h
+++ b/ospf6d/ospf6_top.h
@@ -80,6 +80,8 @@
   struct thread *t_spf_calc;	        /* SPF calculation timer. */
   struct thread *t_ase_calc;		/* ASE calculation timer. */
   struct thread *maxage_remover;
+
+  u_int32_t ref_bandwidth;
 };
 
 #define OSPF6_DISABLED    0x01