--- a/src/internet-node/arp-l3-protocol.cc	Thu Jan 31 21:58:13 2008 +0100
+++ b/src/internet-node/arp-l3-protocol.cc	Thu Jan 31 22:11:03 2008 +0100
@@ -80,7 +80,7 @@
 	  return *i;
 	}
     }
-  Ptr<Ipv4L3Protocol> ipv4 = m_node->QueryInterface<Ipv4L3Protocol> ();
+  Ptr<Ipv4L3Protocol> ipv4 = m_node->GetObject<Ipv4L3Protocol> ();
   Ptr<Ipv4Interface> interface = ipv4->FindInterfaceForDevice (device);
   ArpCache * cache = new ArpCache (device, interface);
   NS_ASSERT (device->IsBroadcast ());