--- a/tutorial/point-to-point-ipv4-topology.cc	Wed Jan 02 09:09:24 2008 +0100
+++ b/tutorial/point-to-point-ipv4-topology.cc	Wed Jan 02 09:25:31 2008 +0100
@@ -60,7 +60,7 @@
   Ipv4Mask mask)
 {
   Ptr<NetDevice> nd = node->GetDevice(netDeviceNumber);
-  Ptr<Ipv4> ipv4 = node->QueryInterface<Ipv4> (Ipv4::iid);
+  Ptr<Ipv4> ipv4 = node->QueryInterface<Ipv4> ();
   uint32_t ifIndex = ipv4->AddInterface (nd);
 
   ipv4->SetAddress (ifIndex, address);