--- a/src/internet-node/udp-impl.h	Tue Mar 11 11:35:26 2008 -0700
+++ b/src/internet-node/udp-impl.h	Tue Mar 11 13:30:12 2008 -0700
@@ -40,9 +40,11 @@
 class UdpImpl : public Udp
 {
 public:
-  UdpImpl (Ptr<UdpL4Protocol> udp);
+  UdpImpl ();
   virtual ~UdpImpl ();
 
+  void SetUdp (Ptr<UdpL4Protocol> udp);
+
   /**
    * \brief Implements a method to create a UdpImpl-based socket and return
    * a base class smart pointer to the socket.