diff --git a/model/ccnx-pit-entry.h b/model/ccnx-pit-entry.h
index bb42a6a..fd426f5 100644
--- a/model/ccnx-pit-entry.h
+++ b/model/ccnx-pit-entry.h
@@ -194,6 +194,18 @@
   void
   RemoveAllReferencesToFace (Ptr<CcnxFace> face);
 
+  /**
+   * @brief Flag outgoing face as hopeless
+   */
+  void
+  SetWaitingInVain (CcnxPitEntryOutgoingFaceContainer::type::iterator face);
+  
+  /**
+   * @brief Check if all outgoing faces are NACKed
+   */
+  bool
+  AreAllOutgoingInVain () const;
+  
 protected:
   
 private: