diff --git a/model/ccnx-l3-protocol.cc b/model/ccnx-l3-protocol.cc
new file mode 100644
index 0000000..bf1230c
--- /dev/null
+++ b/model/ccnx-l3-protocol.cc
@@ -0,0 +1,617 @@
+// -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*-
+//
+// Copyright (c) 2006 Georgia Tech Research Corporation
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License version 2 as
+// published by the Free Software Foundation;
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+//
+// Author: George F. Riley<riley@ece.gatech.edu>
+//
+
+#include "ns3/packet.h"
+#include "ns3/log.h"
+#include "ns3/callback.h"
+#include "ns3/ccnx-address.h"
+#include "ns3/ccnx-route.h"
+#include "ns3/node.h"
+#include "ns3/socket.h"
+#include "ns3/net-device.h"
+#include "ns3/uinteger.h"
+#include "ns3/trace-source-accessor.h"
+#include "ns3/object-vector.h"
+#include "ns3/ccnx-header.h"
+#include "ns3/boolean.h"
+//#include "ns3/ccnx-routing-table-entry.h"
+
+#include "arp-l3-protocol.h"
+#include "ccnx-l3-protocol.h"
+#include "ccnx-interface.h"
+
+NS_LOG_COMPONENT_DEFINE ("CcnxL3Protocol");
+
+namespace ns3 {
+
+const uint16_t CcnxL3Protocol::PROT_NUMBER = 0x7777;
+
+NS_OBJECT_ENSURE_REGISTERED (CcnxL3Protocol);
+
+TypeId 
+CcnxL3Protocol::GetTypeId (void)
+{
+  static TypeId tid = TypeId ("ns3::CcnxL3Protocol")
+    .SetParent<Ccnx> ()
+    .AddConstructor<CcnxL3Protocol> ()
+    .AddTraceSource ("Tx", "Send ccnx packet to outgoing interface.",
+                     MakeTraceSourceAccessor (&CcnxL3Protocol::m_txTrace))
+    .AddTraceSource ("Rx", "Receive ccnx packet from incoming interface.",
+                     MakeTraceSourceAccessor (&CcnxL3Protocol::m_rxTrace))
+    .AddTraceSource ("Drop", "Drop ccnx packet",
+                     MakeTraceSourceAccessor (&CcnxL3Protocol::m_dropTrace))
+    .AddAttribute ("InterfaceList", "The set of Ccnx interfaces associated to this Ccnx stack.",
+                   ObjectVectorValue (),
+                   MakeObjectVectorAccessor (&CcnxL3Protocol::m_interfaces),
+                   MakeObjectVectorChecker<CcnxInterface> ())
+
+    .AddTraceSource ("SendOutgoing", "A newly-generated packet by this node is about to be queued for transmission",
+                     MakeTraceSourceAccessor (&CcnxL3Protocol::m_sendOutgoingTrace))
+
+  ;
+  return tid;
+}
+
+CcnxL3Protocol::CcnxL3Protocol()
+  : m_identification (0)
+{
+  NS_LOG_FUNCTION (this);
+}
+
+CcnxL3Protocol::~CcnxL3Protocol ()
+{
+  NS_LOG_FUNCTION (this);
+}
+
+void
+CcnxL3Protocol::SetNode (Ptr<Node> node)
+{
+  m_node = node;
+  // Add a LoopbackNetDevice if needed, and an CcnxInterface on top of it
+  SetupLoopback ();
+}
+
+/*
+ * This method is called by AddAgregate and completes the aggregation
+ * by setting the node in the ccnx stack
+ */
+void
+CcnxL3Protocol::NotifyNewAggregate ()
+{
+  if (m_node == 0)
+    {
+      Ptr<Node>node = this->GetObject<Node>();
+      // verify that it's a valid node and that
+      // the node has not been set before
+      if (node != 0)
+        {
+          this->SetNode (node);
+        }
+    }
+  Object::NotifyNewAggregate ();
+}
+
+// void 
+// CcnxL3Protocol::SetRoutingProtocol (Ptr<CcnxRoutingProtocol> routingProtocol)
+// {
+//   NS_LOG_FUNCTION (this);
+//   m_routingProtocol = routingProtocol;
+//   m_routingProtocol->SetCcnx (this);
+// }
+
+
+// Ptr<CcnxRoutingProtocol> 
+// CcnxL3Protocol::GetRoutingProtocol (void) const
+// {
+//   return m_routingProtocol;
+// }
+
+void 
+CcnxL3Protocol::DoDispose (void)
+{
+  NS_LOG_FUNCTION (this);
+
+  for (CcnxInterfaceList::iterator i = m_interfaces.begin (); i != m_interfaces.end (); ++i)
+    {
+      *i = 0;
+    }
+  m_interfaces.clear ();
+  m_node = 0;
+  // m_routingProtocol = 0;
+  Object::DoDispose ();
+}
+
+uint32_t 
+CcnxL3Protocol::AddInterface (Ptr<NetDevice> device)
+{
+  NS_LOG_FUNCTION (this << &device);
+
+  Ptr<Node> node = GetObject<Node> ();
+  node->RegisterProtocolHandler (MakeCallback (&CcnxL3Protocol::Receive, this), 
+                                 CcnxL3Protocol::PROT_NUMBER, device, true);
+
+  // ccnx doesn't need arp protocol to run. Everything is broadcast!
+  // node->RegisterProtocolHandler (MakeCallback (&ArpL3Protocol::Receive, PeekPointer (GetObject<ArpL3Protocol> ())),
+  //                                ArpL3Protocol::PROT_NUMBER, device, true);
+
+  Ptr<CcnxInterface> interface = CreateObject<CcnxInterface> ();
+  interface->SetNode (m_node);
+  interface->SetDevice (device);
+  // interface->SetForwarding (m_ipForward);
+  return AddCcnxInterface (interface);
+}
+
+uint32_t 
+CcnxL3Protocol::AddCcnxInterface (Ptr<CcnxInterface>interface)
+{
+  NS_LOG_FUNCTION (this << interface);
+  uint32_t index = m_interfaces.size ();
+  m_interfaces.push_back (interface);
+  return index;
+}
+
+Ptr<CcnxInterface>
+CcnxL3Protocol::GetInterface (uint32_t index) const
+{
+  if (index < m_interfaces.size ())
+    {
+      return m_interfaces[index];
+    }
+  return 0;
+}
+
+uint32_t 
+CcnxL3Protocol::GetNInterfaces (void) const
+{
+  return m_interfaces.size ();
+}
+
+int32_t 
+CcnxL3Protocol::GetInterfaceForDevice (
+  Ptr<const NetDevice> device) const
+{
+  int32_t interface = 0;
+  for (CcnxInterfaceList::const_iterator i = m_interfaces.begin (); 
+       i != m_interfaces.end (); 
+       i++, interface++)
+    {
+      if ((*i)->GetDevice () == device)
+        {
+          return interface;
+        }
+    }
+
+  return -1;
+}
+
+void 
+CcnxL3Protocol::Receive ( Ptr<NetDevice> device, Ptr<const Packet> p, uint16_t protocol, const Address &from,
+                          const Address &to, NetDevice::PacketType packetType)
+{
+  NS_LOG_FUNCTION (this << &device << p << protocol <<  from);
+
+  NS_LOG_LOGIC ("Packet from " << from << " received on node " << 
+                m_node->GetId ());
+
+  uint32_t interface = 0;
+  Ptr<Packet> packet = p->Copy ();
+
+  Ptr<CcnxInterface> ccnxInterface;
+  for (CcnxInterfaceList::const_iterator i = m_interfaces.begin (); 
+       i != m_interfaces.end (); 
+       i++, interface++)
+    {
+      ccnxInterface = *i;
+      if (ccnxInterface->GetDevice () == device)
+        {
+          if (ccnxInterface->IsUp ())
+            {
+              m_rxTrace (packet, m_node->GetObject<Ccnx> (), interface);
+              break;
+            }
+          else
+            {
+              NS_LOG_LOGIC ("Dropping received packet -- interface is down");
+              CcnxHeader ipHeader;
+              packet->RemoveHeader (ipHeader);
+              m_dropTrace (ipHeader, packet, DROP_INTERFACE_DOWN, m_node->GetObject<Ccnx> (), interface);
+              return;
+            }
+        }
+    }
+
+  CcnxHeader ipHeader;
+  if (Node::ChecksumEnabled ())
+    {
+      ipHeader.EnableChecksum ();
+    }
+  packet->RemoveHeader (ipHeader);
+
+  // Trim any residual frame padding from underlying devices
+  if (ipHeader.GetPayloadSize () < packet->GetSize ())
+    {
+      packet->RemoveAtEnd (packet->GetSize () - ipHeader.GetPayloadSize ());
+    }
+
+  if (!ipHeader.IsChecksumOk ()) 
+    {
+      NS_LOG_LOGIC ("Dropping received packet -- checksum not ok");
+      m_dropTrace (ipHeader, packet, DROP_BAD_CHECKSUM, m_node->GetObject<Ccnx> (), interface);
+      return;
+    }
+
+  for (SocketList::iterator i = m_sockets.begin (); i != m_sockets.end (); ++i)
+    {
+      NS_LOG_LOGIC ("Forwarding to raw socket"); 
+      Ptr<CcnxRawSocketImpl> socket = *i;
+      socket->ForwardUp (packet, ipHeader, ccnxInterface);
+    }
+
+  NS_ASSERT_MSG (m_routingProtocol != 0, "Need a routing protocol object to process packets");
+  if (!m_routingProtocol->RouteInput (packet, ipHeader, device,
+                                      MakeCallback (&CcnxL3Protocol::IpForward, this),
+                                      MakeCallback (&CcnxL3Protocol::IpMulticastForward, this),
+                                      MakeCallback (&CcnxL3Protocol::LocalDeliver, this),
+                                      MakeCallback (&CcnxL3Protocol::RouteInputError, this)
+                                      ))
+    {
+      NS_LOG_WARN ("No route found for forwarding packet.  Drop.");
+      m_dropTrace (ipHeader, packet, DROP_NO_ROUTE, m_node->GetObject<Ccnx> (), interface);
+    }
+
+
+}
+
+// void 
+// CcnxL3Protocol::SendWithHeader (Ptr<Packet> packet, 
+//                                 CcnxHeader ipHeader,
+//                                 Ptr<CcnxRoute> route)
+// {
+//   NS_LOG_FUNCTION (this << packet << ipHeader << route);
+//   SendRealOut (route, packet, ipHeader);
+// }
+
+void 
+CcnxL3Protocol::Send (Ptr<Packet> packet, 
+                      Ptr<CcnxRoute> route)
+{
+  NS_LOG_FUNCTION (this << packet << route);
+
+  // CcnxHeader ipHeader;
+  // bool mayFragment = true;
+  // uint8_t ttl = m_defaultTtl;
+  // SocketIpTtlTag tag;
+  // bool found = packet->RemovePacketTag (tag);
+  // if (found)
+  //   {
+  //     ttl = tag.GetTtl ();
+  //   }
+
+  // // Handle a few cases:
+  // // 1) packet is destined to limited broadcast address
+  // // 2) packet is destined to a subnet-directed broadcast address
+  // // 3) packet is not broadcast, and is passed in with a route entry
+  // // 4) packet is not broadcast, and is passed in with a route entry but route->GetGateway is not set (e.g., on-demand)
+  // // 5) packet is not broadcast, and route is NULL (e.g., a raw socket call, or ICMP)
+
+  // // 1) packet is destined to limited broadcast address or link-local multicast address
+  // if (destination.IsBroadcast () || destination.IsLocalMulticast ())
+  //   {
+  //     NS_LOG_LOGIC ("CcnxL3Protocol::Send case 1:  limited broadcast");
+  //     ipHeader = BuildHeader (source, destination, protocol, packet->GetSize (), ttl, mayFragment);
+  //     uint32_t ifaceIndex = 0;
+  //     for (CcnxInterfaceList::iterator ifaceIter = m_interfaces.begin ();
+  //          ifaceIter != m_interfaces.end (); ifaceIter++, ifaceIndex++)
+  //       {
+  //         Ptr<CcnxInterface> outInterface = *ifaceIter;
+  //         Ptr<Packet> packetCopy = packet->Copy ();
+
+  //         NS_ASSERT (packetCopy->GetSize () <= outInterface->GetDevice ()->GetMtu ());
+
+  //         m_sendOutgoingTrace (ipHeader, packetCopy, ifaceIndex);
+  //         packetCopy->AddHeader (ipHeader);
+  //         m_txTrace (packetCopy, m_node->GetObject<Ccnx> (), ifaceIndex);
+  //         outInterface->Send (packetCopy, destination);
+  //       }
+  //     return;
+  //   }
+
+  // // 2) check: packet is destined to a subnet-directed broadcast address
+  // uint32_t ifaceIndex = 0;
+  // for (CcnxInterfaceList::iterator ifaceIter = m_interfaces.begin ();
+  //      ifaceIter != m_interfaces.end (); ifaceIter++, ifaceIndex++)
+  //   {
+  //     Ptr<CcnxInterface> outInterface = *ifaceIter;
+  //     for (uint32_t j = 0; j < GetNAddresses (ifaceIndex); j++)
+  //       {
+  //         CcnxInterfaceAddress ifAddr = GetAddress (ifaceIndex, j);
+  //         NS_LOG_LOGIC ("Testing address " << ifAddr.GetLocal () << " with mask " << ifAddr.GetMask ());
+  //         if (destination.IsSubnetDirectedBroadcast (ifAddr.GetMask ()) && 
+  //             destination.CombineMask (ifAddr.GetMask ()) == ifAddr.GetLocal ().CombineMask (ifAddr.GetMask ())   )
+  //           {
+  //             NS_LOG_LOGIC ("CcnxL3Protocol::Send case 2:  subnet directed bcast to " << ifAddr.GetLocal ());
+  //             ipHeader = BuildHeader (source, destination, protocol, packet->GetSize (), ttl, mayFragment);
+  //             Ptr<Packet> packetCopy = packet->Copy ();
+  //             m_sendOutgoingTrace (ipHeader, packetCopy, ifaceIndex);
+  //             packetCopy->AddHeader (ipHeader);
+  //             m_txTrace (packetCopy, m_node->GetObject<Ccnx> (), ifaceIndex);
+  //             outInterface->Send (packetCopy, destination);
+  //             return;
+  //           }
+  //       }
+  //   }
+
+  // // 3) packet is not broadcast, and is passed in with a route entry
+  // //    with a valid CcnxAddress as the gateway
+  // if (route && route->GetGateway () != CcnxAddress ())
+  //   {
+  //     NS_LOG_LOGIC ("CcnxL3Protocol::Send case 3:  passed in with route");
+  //     ipHeader = BuildHeader (source, destination, protocol, packet->GetSize (), ttl, mayFragment);
+  //     int32_t interface = GetInterfaceForDevice (route->GetOutputDevice ());
+  //     m_sendOutgoingTrace (ipHeader, packet, interface);
+  //     SendRealOut (route, packet->Copy (), ipHeader);
+  //     return; 
+  //   } 
+  // // 4) packet is not broadcast, and is passed in with a route entry but route->GetGateway is not set (e.g., on-demand)
+  // if (route && route->GetGateway () == CcnxAddress ())
+  //   {
+  //     // This could arise because the synchronous RouteOutput() call
+  //     // returned to the transport protocol with a source address but
+  //     // there was no next hop available yet (since a route may need
+  //     // to be queried).
+  //     NS_FATAL_ERROR ("CcnxL3Protocol::Send case 4: This case not yet implemented");
+  //   }
+  // // 5) packet is not broadcast, and route is NULL (e.g., a raw socket call)
+  // NS_LOG_LOGIC ("CcnxL3Protocol::Send case 5:  passed in with no route " << destination);
+  // Socket::SocketErrno errno_; 
+  // Ptr<NetDevice> oif (0); // unused for now
+  // ipHeader = BuildHeader (source, destination, protocol, packet->GetSize (), ttl, mayFragment);
+  // Ptr<CcnxRoute> newRoute;
+  // if (m_routingProtocol != 0)
+  //   {
+  //     newRoute = m_routingProtocol->RouteOutput (packet, ipHeader, oif, errno_);
+  //   }
+  // else
+  //   {
+  //     NS_LOG_ERROR ("CcnxL3Protocol::Send: m_routingProtocol == 0");
+  //   }
+  // if (newRoute)
+  //   {
+  //     int32_t interface = GetInterfaceForDevice (newRoute->GetOutputDevice ());
+  //     m_sendOutgoingTrace (ipHeader, packet, interface);
+  //     SendRealOut (newRoute, packet->Copy (), ipHeader);
+  //   }
+  // else
+  //   {
+  //     NS_LOG_WARN ("No route to host.  Drop.");
+  //     m_dropTrace (ipHeader, packet, DROP_NO_ROUTE, m_node->GetObject<Ccnx> (), 0);
+  //   }
+}
+
+
+void
+CcnxL3Protocol::SendRealOut (Ptr<CcnxRoute> route,
+                             Ptr<Packet> packet,
+                             CcnxHeader const &ipHeader)
+{
+  NS_LOG_FUNCTION (this << packet << &ipHeader);
+
+  // if (route == 0)
+  //   {
+  //     NS_LOG_WARN ("No route to host.  Drop.");
+  //     m_dropTrace (ipHeader, packet, DROP_NO_ROUTE, m_node->GetObject<Ccnx> (), 0);
+  //     return;
+  //   }
+  // packet->AddHeader (ipHeader);
+  // Ptr<NetDevice> outDev = route->GetOutputDevice ();
+  // int32_t interface = GetInterfaceForDevice (outDev);
+  // NS_ASSERT (interface >= 0);
+  // Ptr<CcnxInterface> outInterface = GetInterface (interface);
+  // NS_LOG_LOGIC ("Send via NetDevice ifIndex " << outDev->GetIfIndex () << " ccnxInterfaceIndex " << interface);
+
+  // NS_ASSERT_MSG (packet->GetSize () <= outInterface->GetDevice ()->GetMtu (), 
+  //                "Packet size " << packet->GetSize () << " exceeds device MTU "
+  //                               << outInterface->GetDevice ()->GetMtu ()
+  //                               << " for Ccnx; fragmentation not supported");
+  // if (!route->GetGateway ().IsEqual (CcnxAddress ("0.0.0.0"))) 
+  //   {
+  //     if (outInterface->IsUp ())
+  //       {
+  //         NS_LOG_LOGIC ("Send to gateway " << route->GetGateway ());
+  //         m_txTrace (packet, m_node->GetObject<Ccnx> (), interface);
+  //         outInterface->Send (packet, route->GetGateway ());
+  //       }
+  //     else
+  //       {
+  //         NS_LOG_LOGIC ("Dropping -- outgoing interface is down: " << route->GetGateway ());
+  //         CcnxHeader ipHeader;
+  //         packet->RemoveHeader (ipHeader);
+  //         m_dropTrace (ipHeader, packet, DROP_INTERFACE_DOWN, m_node->GetObject<Ccnx> (), interface);
+  //       }
+  //   } 
+  // else 
+  //   {
+  //     if (outInterface->IsUp ())
+  //       {
+  //         NS_LOG_LOGIC ("Send to destination " << ipHeader.GetDestination ());
+  //         m_txTrace (packet, m_node->GetObject<Ccnx> (), interface);
+  //         outInterface->Send (packet, ipHeader.GetDestination ());
+  //       }
+  //     else
+  //       {
+  //         NS_LOG_LOGIC ("Dropping -- outgoing interface is down: " << ipHeader.GetDestination ());
+  //         CcnxHeader ipHeader;
+  //         packet->RemoveHeader (ipHeader);
+  //         m_dropTrace (ipHeader, packet, DROP_INTERFACE_DOWN, m_node->GetObject<Ccnx> (), interface);
+  //       }
+  //   }
+}
+
+
+// This function analogous to Linux ip_forward()
+// void
+// CcnxL3Protocol::IpForward (Ptr<CcnxRoute> rtentry, Ptr<const Packet> p, const CcnxHeader &header)
+// {
+//   NS_LOG_FUNCTION (this << rtentry << p << header);
+//   NS_LOG_LOGIC ("Forwarding logic for node: " << m_node->GetId ());
+//   // Forwarding
+//   CcnxHeader ipHeader = header;
+//   Ptr<Packet> packet = p->Copy ();
+//   int32_t interface = GetInterfaceForDevice (rtentry->GetOutputDevice ());
+//   ipHeader.SetTtl (ipHeader.GetTtl () - 1);
+//   if (ipHeader.GetTtl () == 0)
+//     {
+//       // Do not reply to ICMP or to multicast/broadcast IP address 
+//       if (ipHeader.GetProtocol () != Icmpv4L4Protocol::PROT_NUMBER && 
+//           ipHeader.GetDestination ().IsBroadcast () == false &&
+//           ipHeader.GetDestination ().IsMulticast () == false)
+//         {
+//           Ptr<Icmpv4L4Protocol> icmp = GetIcmp ();
+//           icmp->SendTimeExceededTtl (ipHeader, packet);
+//         }
+//       NS_LOG_WARN ("TTL exceeded.  Drop.");
+//       m_dropTrace (header, packet, DROP_TTL_EXPIRED, m_node->GetObject<Ccnx> (), interface);
+//       return;
+//     }
+//   m_unicastForwardTrace (ipHeader, packet, interface);
+//   SendRealOut (rtentry, packet, ipHeader);
+// }
+
+// Will be called from CcnxRoutingProtocol if prefix is locally registered
+// Local interest will be satisfied inside CcnxInterface::Send call
+
+void
+CcnxL3Protocol::LocalDeliver (Ptr<const Packet> packet, CcnxHeader const&ip, uint32_t iif)
+{
+  NS_LOG_FUNCTION (this << packet << &ip);
+  Ptr<Packet> p = packet->Copy (); // need to pass a non-const packet up
+
+//   m_localDeliverTrace (ip, packet, iif);
+
+//   Ptr<CcnxL4Protocol> protocol = GetProtocol (ip.GetProtocol ());
+//   if (protocol != 0)
+//     {
+//       // we need to make a copy in the unlikely event we hit the
+//       // RX_ENDPOINT_UNREACH codepath
+//       Ptr<Packet> copy = p->Copy ();
+//       enum CcnxL4Protocol::RxStatus status = 
+//         protocol->Receive (p, ip, GetInterface (iif));
+//       switch (status) {
+//         case CcnxL4Protocol::RX_OK:
+//         // fall through
+//         case CcnxL4Protocol::RX_ENDPOINT_CLOSED:
+//         // fall through
+//         case CcnxL4Protocol::RX_CSUM_FAILED:
+//           break;
+//         case CcnxL4Protocol::RX_ENDPOINT_UNREACH:
+//           if (ip.GetDestination ().IsBroadcast () == true ||
+//               ip.GetDestination ().IsMulticast () == true)
+//             {
+//               break; // Do not reply to broadcast or multicast
+//             }
+//           // Another case to suppress ICMP is a subnet-directed broadcast
+//           bool subnetDirected = false;
+//           for (uint32_t i = 0; i < GetNAddresses (iif); i++)
+//             {
+//               CcnxInterfaceAddress addr = GetAddress (iif, i);
+//               if (addr.GetLocal ().CombineMask (addr.GetMask ()) == ip.GetDestination ().CombineMask (addr.GetMask ()) &&
+//                   ip.GetDestination ().IsSubnetDirectedBroadcast (addr.GetMask ()))
+//                 {
+//                   subnetDirected = true;
+//                 }
+s//             }
+//           if (subnetDirected == false)
+//             {
+//               GetIcmp ()->SendDestUnreachPort (ip, copy);
+//             }
+//         }
+//     }
+}
+
+void 
+CcnxL3Protocol::SetMetric (uint32_t i, uint16_t metric)
+{
+  NS_LOG_FUNCTION (this << i << metric);
+  Ptr<CcnxInterface> interface = GetInterface (i);
+  interface->SetMetric (metric);
+}
+
+uint16_t
+CcnxL3Protocol::GetMetric (uint32_t i) const
+{
+  Ptr<CcnxInterface> interface = GetInterface (i);
+  return interface->GetMetric ();
+}
+
+uint16_t 
+CcnxL3Protocol::GetMtu (uint32_t i) const
+{
+  Ptr<CcnxInterface> interface = GetInterface (i);
+  return interface->GetDevice ()->GetMtu ();
+}
+
+bool 
+CcnxL3Protocol::IsUp (uint32_t i) const
+{
+  Ptr<CcnxInterface> interface = GetInterface (i);
+  return interface->IsUp ();
+}
+
+void 
+CcnxL3Protocol::SetUp (uint32_t i)
+{
+  NS_LOG_FUNCTION (this << i);
+  Ptr<CcnxInterface> interface = GetInterface (i);
+  interface->SetUp ();
+
+  if (m_routingProtocol != 0)
+    {
+      m_routingProtocol->NotifyInterfaceUp (i);
+    }
+}
+
+void 
+CcnxL3Protocol::SetDown (uint32_t ifaceIndex)
+{
+  NS_LOG_FUNCTION (this << ifaceIndex);
+  Ptr<CcnxInterface> interface = GetInterface (ifaceIndex);
+  interface->SetDown ();
+
+  if (m_routingProtocol != 0)
+    {
+      m_routingProtocol->NotifyInterfaceDown (ifaceIndex);
+    }
+}
+
+Ptr<NetDevice>
+CcnxL3Protocol::GetNetDevice (uint32_t i)
+{
+  return GetInterface (i)->GetDevice ();
+}
+
+void
+CcnxL3Protocol::RouteInputError (Ptr<const Packet> p, const CcnxHeader & ipHeader, Socket::SocketErrno sockErrno)
+{
+  NS_LOG_FUNCTION (this << p << ipHeader << sockErrno);
+  NS_LOG_LOGIC ("Route input failure-- dropping packet to " << ipHeader << " with errno " << sockErrno); 
+  m_dropTrace (ipHeader, p, DROP_ROUTE_ERROR, m_node->GetObject<Ccnx> (), 0);
+}
+
+} //namespace ns3