I think congestion works
diff --git a/helper/ccnx-stack-helper.cc b/helper/ccnx-stack-helper.cc
index e045dcd..7215c63 100644
--- a/helper/ccnx-stack-helper.cc
+++ b/helper/ccnx-stack-helper.cc
@@ -233,7 +233,9 @@
     }
     
   m_forwardingHelper.SetForwarding (ccnx, pit);
-  
+
+  ccnx->ScheduleLeakage ();
+    
   return faces;
 }