More progress with buffers
diff --git a/model/pit/ndn-pit-entry-impl.h b/model/pit/ndn-pit-entry-impl.h
index 85c94f1..6af9cc5 100644
--- a/model/pit/ndn-pit-entry-impl.h
+++ b/model/pit/ndn-pit-entry-impl.h
@@ -62,6 +62,15 @@
     CONTAINER.RescheduleCleaning ();
   }
 
+  virtual void
+  OffsetLifetime (const Time &offsetTime)
+  {
+    CONTAINER.i_time.erase (Pit::time_index::s_iterator_to (*this));
+    super::OffsetLifetime (offsetTime);
+    CONTAINER.i_time.insert (*this);
+
+    CONTAINER.RescheduleCleaning ();
+  }
   
   // to make sure policies work
   void