This was reported to the Quagga community as bug 813.

https://bugzilla.quagga.net/show_bug.cgi?id=813

The patch has been submitted and attached to that bug.

This patch may be removed if the version of Quagga is updated to a version

that has this bug fixed.

--- ospfd/ospf_apiserver.c

+++ ospfd/ospf_apiserver.c

@@ -375,6 +375,11 @@ ospf_apiserver_free (struct ospf_apiserv

     }

+  if (apiserv->opaque_types)

+    {

+      list_delete (apiserv->opaque_types);

+    }

+

   /* Close connections to OSPFd. */

   if (apiserv->fd_sync > 0)

     {

@@ -978,10 +978,11 @@ ospf_apiserver_unregister_opaque_type (s

 	  ospf_apiserver_flush_opaque_lsa (apiserv, lsa_type, opaque_type);

 	  ospf_delete_opaque_functab (lsa_type, opaque_type);

 	  /* Remove from list of registered opaque types */

 	  listnode_delete (apiserv->opaque_types, regtype);

+	  XFREE(MTYPE_OSPF_APISERVER, regtype);

           if (IS_DEBUG_OSPF_EVENT)

             zlog_debug ("API: Del LSA-type(%d)/Opaque-type(%d)"

                        " from apiserv(%p), total#(%d)", 

                        lsa_type, opaque_type, apiserv, 

--- ospfd/ospfd.c

+++ ospfd/ospfd.c

@@ -633,7 +633,7 @@ ospf_area_free (struct ospf_area *area)

   /* Cancel timer. */

   OSPF_TIMER_OFF (area->t_stub_router);

 #ifdef HAVE_OPAQUE_LSA

-  OSPF_TIMER_OFF (area->t_opaque_lsa_self);

+  ospf_opaque_type10_lsa_term (area);

 #endif /* HAVE_OPAQUE_LSA */

   if (OSPF_IS_AREA_BACKBONE (area))