diff --git a/zebra/interface.c b/zebra/interface.c
index e386047..69124b3 100644
--- a/zebra/interface.c
+++ b/zebra/interface.c
@@ -1273,6 +1273,8 @@
   if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_CONFIGURED))
     return CMD_WARNING;
 
+  UNSET_FLAG (ifc->conf, ZEBRA_IFC_CONFIGURED);
+  
   /* This is not real address or interface is not active. */
   if (! CHECK_FLAG (ifc->conf, ZEBRA_IFC_REAL)
       || ! CHECK_FLAG (ifp->status, ZEBRA_INTERFACE_ACTIVE))