--- a/src/internet-node/ipv4-loopback-interface.h	Tue Mar 11 11:35:26 2008 -0700
+++ b/src/internet-node/ipv4-loopback-interface.h	Tue Mar 11 13:30:12 2008 -0700
@@ -34,13 +34,13 @@
 class Ipv4LoopbackInterface : public Ipv4Interface 
 {
  public:
-  /**
-   * \brief Constructor
-   * \param node Pointer to a node associated with this IPv4 interface
-   */
-  Ipv4LoopbackInterface (Ptr<Node> node);
+  Ipv4LoopbackInterface ();
   virtual ~Ipv4LoopbackInterface ();
 
+  virtual Ptr<NetDevice> GetDevice (void) const;
+
+  void SetNode (Ptr<Node> node);
+
  private:
   virtual void SendTo (Ptr<Packet> p, Ipv4Address dest);