--- a/src/internet-node/tcp-impl.h	Tue Mar 11 11:35:26 2008 -0700
+++ b/src/internet-node/tcp-impl.h	Tue Mar 11 13:30:12 2008 -0700
@@ -42,9 +42,11 @@
 class TcpImpl : public Tcp
 {
 public:
-  TcpImpl (Ptr<TcpL4Protocol> tcp);
+  TcpImpl ();
   virtual ~TcpImpl ();
 
+  void SetTcp (Ptr<TcpL4Protocol> tcp);
+
   virtual Ptr<Socket> CreateSocket (void);
 
 protected: