--- a/examples/csma-multicast.cc	Wed Apr 09 10:04:16 2008 -0700
+++ b/examples/csma-multicast.cc	Thu Apr 10 13:16:43 2008 -0700
@@ -84,8 +84,7 @@
 
   NS_LOG_INFO ("Add IP Stack.");
   InternetStackHelper internet;
-  internet.Install (c0);
-  internet.Install (c1);
+  internet.Install (c);
 
   NS_LOG_INFO ("Assign IP Addresses.");
   Ipv4AddressHelper ipv4Addr;