--- a/src/internet-stack/ipv4-l3-protocol.h	Wed Jun 09 15:30:33 2010 +0530
+++ b/src/internet-stack/ipv4-l3-protocol.h	Thu Jun 10 11:45:16 2010 +0530
@@ -45,7 +45,6 @@
 class Socket;
 class Ipv4RawSocketImpl;
 class Ipv4L4Protocol;
-class Ipv4L4Protocol;
 class Icmpv4L4Protocol;