void
RoutingProtocol6::NotifyInterfaceUp (uint32_t i)
{
  NS_LOG_INFO("RoutingProtocol6 notify interface up is being called");
  NS_LOG_FUNCTION (this << m_ipv6->GetAddress (i, 0).GetAddress ());
  Ptr<Ipv6L3Protocol> l3 = m_ipv6->GetObject<Ipv6L3Protocol> ();
  uint32_t Naddresses= l3->GetNAddresses(i);
  Ptr<NetDevice> dev = l3->GetNetDevice(i);
  NS_LOG_INFO("Number of addresses associated with interface="<<i<<" are "<<Naddresses<<" and the addresses are="<<l3->GetAddress(i,0)<<" and"<<l3->GetAddress(i,1));
  Ipv6InterfaceAddress iface = l3->GetAddress (i, 1);
  RoutingTableEntry6 rt (/*device=*/ dev, /*dst=*/ iface.GetAddress(), /*know seqno=*/ true, /*seqno=*/ 0, /*iface=*/ iface,
	                                      /*hops=*/ 1, /*next hop=*/iface.GetAddress().GetZero(), /*lifetime=*/ Simulator::GetMaximumSimulationTime ());
  m_routingTable.AddRoute (rt);



  bool sendSocketFound = false;
  for (SocketListI iter = m_sendSocketList.begin(); iter != m_sendSocketList.end (); iter++ )
  {
	  if (iter->second == i)
	  {
		  NS_LOG_INFO("Send socket already exists");
		  sendSocketFound = true;
		  break;
	  }
  }

  Ipv6InterfaceAddress address = l3->GetAddress (i, 0);
  NS_LOG_INFO("Notifyinterfaceup i="<<i<<" ifaceAddress="<<address);
	  if (address.GetScope() == Ipv6InterfaceAddress::LINKLOCAL && sendSocketFound == false)
	  {
		  NS_LOG_LOGIC ("AODV: adding unicast socket to " << address.GetAddress ());
		  TypeId tid = TypeId::LookupByName ("ns3::UdpSocketFactory");
		  Ptr<Node> theNode = GetObject<Node> ();
		  Ptr<Socket> socket = Socket::CreateSocket (theNode, tid);
		  NS_ASSERT_MSG(socket,"unicast socket not created");
		  Inet6SocketAddress local = Inet6SocketAddress (address.GetAddress (), AODV_PORT);
		  int ret= socket->Bind (local);
		  NS_ASSERT_MSG(ret>=0," Socket not bound to unicast address");
		  socket->BindToNetDevice (m_ipv6->GetNetDevice (i));
		  NS_LOG_INFO("Send socket bound net device="<<socket->GetBoundNetDevice());
		  socket->SetRecvCallback (MakeCallback (&RoutingProtocol6::RecvAodv, this)); //previously i had not set the callback
		  socket->SetIpv6RecvHopLimit(true);
		  socket->SetAttribute ("IpTtl", UintegerValue (1));
		  NS_LOG_INFO("socket instance type id="<<socket->GetInstanceTypeId());
       	  m_socketAddresses.insert (std::make_pair (socket, address));
       	  Ipv6Address test;
       	  if (m_socketAddresses.find (socket) != m_socketAddresses.end ())
       	  {
       		  test = m_socketAddresses[socket].GetAddress ();
       		  NS_LOG_INFO("In socket addresses, added address="<<test);
       	  }
       	  m_sendSocketList [socket] = i;
		  NS_ASSERT_MSG (!m_socketAddresses.empty(),"socket pair not created");		  
	  }
	  if(!m_recvSocket)
	  {
		  NS_LOG_LOGIC ("AODV: adding receiving socket");
		  TypeId tid = TypeId::LookupByName ("ns3::UdpSocketFactory");
	      Ptr<Node> theNode = GetObject<Node> ();
	      m_recvSocket = Socket::CreateSocket (theNode, tid);
	      NS_ASSERT_MSG(m_recvSocket,"receive socket not created");
	      Inet6SocketAddress local = Inet6SocketAddress (Ipv6Address::GetAny (), AODV_PORT);
	      m_recvSocket->Bind (local);
	      m_recvSocket->BindToNetDevice (m_ipv6->GetNetDevice (i));
	      m_recvSocket->SetIpv6RecvHopLimit(true);
	      NS_LOG_INFO("Listen socket bound net device="<<m_recvSocket->GetBoundNetDevice());
	      m_recvSocket->SetRecvCallback (MakeCallback (&RoutingProtocol6::RecvAodv, this));
	      m_recvSocket->SetRecvPktInfo (true);
	      m_recvSocket->SetAttribute ("IpTtl", UintegerValue (1));
	      m_socketAddresses.insert (std::make_pair (m_recvSocket, address));
       }
  if (l3->GetInterface (i)->GetNdiscCache ())
    {
      NS_LOG_INFO("Entry in ndiscCache");
	  m_nb.AddNdiscCache (l3->GetInterface (i)->GetNdiscCache ());
    }
  else
  {
	  NS_LOG_INFO("No entry in ndiscCache");
  }

  // Allow neighbor manager use this interface for layer 2 feedback if possible
  Ptr<WifiNetDevice> wifi = dev->GetObject<WifiNetDevice> ();
  if (wifi == 0)
    return;
  Ptr<WifiMac> mac = wifi->GetMac ();
  if (mac == 0)
    return;

  mac->TraceConnectWithoutContext ("TxErrHeader", m_nb.GetTxErrorCallback ());
}