diff --git a/zebra/redistribute.c b/zebra/redistribute.c
index 4765824..078c2ad 100644
--- a/zebra/redistribute.c
+++ b/zebra/redistribute.c
@@ -358,6 +358,9 @@
 		  p->prefixlen, ifc->ifp->name);
     }
 
+  if (!CHECK_FLAG(ifc->conf, ZEBRA_IFC_REAL))
+    zlog_warn("WARNING: advertising address to clients that is not yet usable.");
+
   router_id_add_address(ifc);
 
   for (ALL_LIST_ELEMENTS (zebrad.client_list, node, nnode, client))