diff -r 78d13ba7e074 src/internet-stack/ipv4-raw-socket-impl.cc
--- a/src/internet-stack/ipv4-raw-socket-impl.cc	Tue May 04 09:27:10 2010 -0400
+++ b/src/internet-stack/ipv4-raw-socket-impl.cc	Mon Jun 14 06:07:01 2010 +0530
@@ -252,6 +252,31 @@
   m_protocol = protocol;
 }
 
+void
+Ipv4RawSocketImpl::AddProtocol(uint16_t protocol)
+{
+  NS_LOG_FUNCTION(this << protocol);
+  m_protocolList.push_back(protocol);
+}
+
+bool
+Ipv4RawSocketImpl::CheckProtocols(uint16_t protocol)
+{
+  /**
+  * If list is empty, listen all protocols
+  */
+  if(m_protocolList.size() == 0 )
+    return true;
+
+  for(std::vector<uint16_t>::iterator i = m_protocolList.begin(); i != m_protocolList.end() ; i++)
+  {
+    if(*i == protocol)
+      return true;
+  }
+
+  return false;
+}
+
 bool 
 Ipv4RawSocketImpl::ForwardUp (Ptr<const Packet> p, Ipv4Header ipHeader, Ptr<NetDevice> device)
 {
@@ -262,11 +287,11 @@
     }
   NS_LOG_LOGIC ("src = " << m_src << " dst = " << m_dst);
   if ((m_src == Ipv4Address::GetAny () || ipHeader.GetDestination () == m_src) &&
-      (m_dst == Ipv4Address::GetAny () || ipHeader.GetSource () == m_dst) &&
-      ipHeader.GetProtocol () == m_protocol)
+      (m_dst == Ipv4Address::GetAny () || ipHeader.GetSource () == m_dst) && 
+      CheckProtocols(ipHeader.GetProtocol()) ) 
     {
       Ptr<Packet> copy = p->Copy ();
-      if (m_protocol == 1)
+	if (ipHeader.GetProtocol () == 1)
 	{
 	  Icmpv4Header icmpHeader;
 	  copy->PeekHeader (icmpHeader);