--- a/src/internet-node/ipv4-interface.cc	Fri Aug 10 15:47:00 2007 +0200
+++ b/src/internet-node/ipv4-interface.cc	Fri Aug 10 15:47:13 2007 +0200
@@ -22,6 +22,7 @@
 #include "ipv4-interface.h"
 #include "ns3/ipv4-address.h"
 #include "ns3/net-device.h"
+#include "ns3/trace-resolver.h"
 
 namespace ns3 {
 
@@ -45,7 +46,7 @@
   return m_netdevice;
 }
 
-TraceResolver *
+Ptr<TraceResolver>
 Ipv4Interface::CreateTraceResolver (void)
 {
   return DoCreateTraceResolver ();