--- a/src/helper/on-off-helper.cc	Wed Nov 05 19:53:52 2008 -0800
+++ b/src/helper/on-off-helper.cc	Thu Nov 06 13:08:20 2008 -0800
@@ -38,18 +38,30 @@
 }
 
 ApplicationContainer
-OnOffHelper::Install (NodeContainer c)
+OnOffHelper::Install (Ptr<Node> node) const
+{
+  return ApplicationContainer (InstallPriv (node));
+}
+
+ApplicationContainer
+OnOffHelper::Install (NodeContainer c) const
 {
   ApplicationContainer apps;
   for (NodeContainer::Iterator i = c.Begin (); i != c.End (); ++i)
     {
-      Ptr<Node> node = *i;
-      Ptr<Application> app = m_factory.Create<Application> ();
-      node->AddApplication (app);
-      apps.Add (app);
+      apps.Add (InstallPriv (*i));
     }
+
   return apps;
 }
 
+Ptr<Application>
+OnOffHelper::InstallPriv (Ptr<Node> node) const
+{
+  Ptr<Application> app = m_factory.Create<Application> ();
+  node->AddApplication (app);
+
+  return app;
+}
 
 } // namespace ns3