diff --git a/model/ipv4-global-routing-unordered-nexthops.h b/model/ipv4-global-routing-unordered-nexthops.h
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+// -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*-
+//
+// Copyright (c) 2008 University of Washington
+//
+// 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
+//
+//
+
+#ifndef IPV4_GLOBAL_ROUTING_UNORDERED_NEXTHOPS_H
+#define IPV4_GLOBAL_ROUTING_UNORDERED_NEXTHOPS_H
+
+#include "ns3/ipv4-global-routing.h"
+#include "ns3/trie.h"
+#include "ns3/ipv4-routing-table-entry.h"
+#include "ns3/simple-ref-count.h"
+
+#include <boost/multi_index_container.hpp>
+#include <boost/multi_index/tag.hpp>
+#include <boost/multi_index/ordered_index.hpp>
+#include <boost/multi_index/mem_fun.hpp>
+#include <boost/multi_index/random_access_index.hpp>
+#include <boost/multi_index/sequenced_index.hpp>
+
+namespace ns3 {
+
+/**
+ * \brief Global routing protocol for IP version 4 stacks.
+ *
+ * Each prefix entry stores a list of ordered by metric next-hops
+ *
+ * This class deals with Ipv4 unicast routes only.
+ *
+ * \see Ipv4GlobalRouting
+ * \see Ipv4RoutingProtocol
+ * \see GlobalRouteManager
+ */
+class Ipv4GlobalRoutingUnorderedNexthops : public Ipv4GlobalRouting
+{
+private:
+  class EntryContainer
+    : public SimpleRefCount<EntryContainer>
+    , public
+      std::vector<Ipv4RoutingTableEntry>
+  {
+  };
+  
+public:
+  static TypeId GetTypeId (void);
+
+  Ipv4GlobalRoutingUnorderedNexthops ();
+  
+  // These methods inherited from base class
+  // from Ipv4RoutingProtocol
+  virtual Ptr<Ipv4Route> RouteOutput (Ptr<Packet> p, const Ipv4Header &header,
+                                      Ptr<NetDevice> oif, Socket::SocketErrno &sockerr);
+
+  virtual bool RouteInput  (Ptr<const Packet> p, const Ipv4Header &header, Ptr<const NetDevice> idev,
+                            UnicastForwardCallback ucb, MulticastForwardCallback mcb,
+                            LocalDeliverCallback lcb, ErrorCallback ecb);
+
+  virtual void PrintRoutingTable (Ptr<OutputStreamWrapper> stream) const;
+
+  // from Ipv4GlobalRouting  
+  virtual void AddRouteTo (Ipv4Address dest, 
+                           Ipv4Mask destMask, 
+                           Ipv4Address nextHop, 
+                           uint32_t interface,
+                           uint32_t metric=0);
+
+  virtual void DeleteRoutes ();
+
+  virtual void FixRoutes ();
+
+protected:
+  virtual Ptr<Ipv4Route> LookupGlobal (uint32_t entryNum, Ipv4Address dest, Ptr<NetDevice> oif = 0);
+  
+private:
+  typedef Ipv4AddressTrie<Ptr<EntryContainer> > Ipv4AddressTrieMap;
+  Ipv4AddressTrieMap m_routes;
+
+  uint32_t m_numLogicalEntries;
+};
+
+} // Namespace ns3
+
+#endif /* IPV4_GLOBAL_ROUTING_UNORDERED_NEXTHOPS_H */