--- a/src/applications/packet-sink/packet-sink.cc	Wed May 21 19:00:38 2008 -0700
+++ b/src/applications/packet-sink/packet-sink.cc	Wed May 21 22:40:18 2008 -0700
@@ -106,10 +106,10 @@
   while (packet = socket->Recv ())
     {
       SocketRxAddressTag tag;
-      bool found = packet->PeekTag (tag);
+      bool found = packet->FindFirstMatchingTag (tag);
       NS_ASSERT (found);
       Address from = tag.GetAddress ();
-      packet->RemoveTag (tag);
+      // XXX packet->RemoveTag (tag);
       if (InetSocketAddress::IsMatchingType (from))
         {
           InetSocketAddress address = InetSocketAddress::ConvertFrom (from);

--- a/src/applications/udp-echo/udp-echo-client.cc	Wed May 21 19:00:38 2008 -0700
+++ b/src/applications/udp-echo/udp-echo-client.cc	Wed May 21 22:40:18 2008 -0700
@@ -153,10 +153,10 @@
   while (packet = socket->Recv ())
     {
       SocketRxAddressTag tag;
-      bool found = packet->PeekTag (tag);
+      bool found = packet->FindFirstMatchingTag (tag);
       NS_ASSERT (found);
       Address from = tag.GetAddress ();
-      packet->RemoveTag (tag);
+      // XXX packet->RemoveTag (tag);
       if (InetSocketAddress::IsMatchingType (from))
         {
           InetSocketAddress address = InetSocketAddress::ConvertFrom (from);

--- a/src/applications/udp-echo/udp-echo-server.cc	Wed May 21 19:00:38 2008 -0700
+++ b/src/applications/udp-echo/udp-echo-server.cc	Wed May 21 22:40:18 2008 -0700
@@ -98,10 +98,10 @@
   while (packet = socket->Recv ())
     {
       SocketRxAddressTag tag;
-      bool found = packet->PeekTag (tag); 
+      bool found = packet->FindFirstMatchingTag (tag); 
       NS_ASSERT (found);
       Address from = tag.GetAddress ();
-      packet->RemoveTag (tag);
+      // XXX packet->RemoveTag (tag);
       if (InetSocketAddress::IsMatchingType (from))
         {
           InetSocketAddress address = InetSocketAddress::ConvertFrom (from);

--- a/src/internet-node/ipv4-l3-protocol.cc	Wed May 21 19:00:38 2008 -0700
+++ b/src/internet-node/ipv4-l3-protocol.cc	Wed May 21 22:40:18 2008 -0700
@@ -490,9 +490,7 @@
   // Set TTL to 1 if it is a broadcast packet of any type.  Otherwise,
   // possibly override the default TTL if the packet is tagged
   SocketIpTtlTag tag;
-  bool found = packet->PeekTag (tag);
-  uint8_t socketTtl = tag.GetTtl ();
-  packet->RemoveTag (tag);
+  bool found = packet->FindFirstMatchingTag (tag);
 
   if (destination.IsBroadcast ()) 
     {
@@ -500,7 +498,8 @@
     }
   else if (found)
     {
-      ipHeader.SetTtl (socketTtl);
+      ipHeader.SetTtl (tag.GetTtl ());
+      // XXX remove tag here?  
     }
   else
     {

--- a/src/node/socket.cc	Wed May 21 19:00:38 2008 -0700
+++ b/src/node/socket.cc	Wed May 21 22:40:18 2008 -0700
@@ -30,19 +30,6 @@
 
 namespace ns3 {
 
-#if 0
-TypeId
-Socket::GetTypeId (void)
-{
-  static TypeId tid = TypeId ("ns3::Socket")
-    .SetParent<Object> ()
-    .AddConstructor<Socket> ()
-  ;
-  return tid;
-}
-
-#endif
-
 Socket::Socket (void)
 {
   NS_LOG_FUNCTION_NOARGS ();
@@ -266,42 +253,14 @@
     }
 }
 
+/***************************************************************
+ *           Socket Tags
+ ***************************************************************/
+
 SocketRxAddressTag::SocketRxAddressTag ()  
 {
 }
 
-uint32_t 
-SocketRxAddressTag::GetUid (void)
-{
-  static uint32_t uid = ns3::Tag::AllocateUid<SocketRxAddressTag> ("SocketRxAddressTag.ns3");
-  return uid;
-}
-
-void
-SocketRxAddressTag::Print (std::ostream &os) const
-{
-  os << "address="<< m_address;
-}
-
-uint32_t 
-SocketRxAddressTag::GetSerializedSize (void) const
-{
-  return 0;
-}
-
-void 
-SocketRxAddressTag::Serialize (Buffer::Iterator i) const
-{
-  // for local use in stack only
-}
-
-uint32_t 
-SocketRxAddressTag::Deserialize (Buffer::Iterator i)
-{
-  // for local use in stack only
-  return 0;
-}
-
 void 
 SocketRxAddressTag::SetAddress (Address addr)
 {
@@ -314,40 +273,39 @@
   return m_address;
 }
 
-SocketIpTtlTag::SocketIpTtlTag ()  
+
+TypeId
+SocketRxAddressTag::GetTypeId (void)
 {
-}
-
-uint32_t 
-SocketIpTtlTag::GetUid (void)
-{
-  static uint32_t uid = ns3::Tag::AllocateUid<SocketIpTtlTag> ("SocketIpTtlTag.ns3");
-  return uid;
+  static TypeId tid = TypeId ("ns3::SocketRxAddressTag")
+    .SetParent<Tag> ()
+    .AddConstructor<SocketRxAddressTag> ()
+    ;
+  return tid;
 }
-
-void
-SocketIpTtlTag::Print (std::ostream &os) const
+TypeId
+SocketRxAddressTag::GetInstanceTypeId (void) const
 {
-  os << "ttl="<< m_ttl;
+  return GetTypeId ();
 }
-
 uint32_t 
-SocketIpTtlTag::GetSerializedSize (void) const
-{
+SocketRxAddressTag::GetSerializedSize (void) const
+{ 
   return 0;
 }
-
 void 
-SocketIpTtlTag::Serialize (Buffer::Iterator i) const
-{
+SocketRxAddressTag::Serialize (TagBuffer i) const
+{ 
+  // for local use in stack only
+}
+void 
+SocketRxAddressTag::Deserialize (TagBuffer i)
+{ 
   // for local use in stack only
 }
 
-uint32_t 
-SocketIpTtlTag::Deserialize (Buffer::Iterator i)
+SocketIpTtlTag::SocketIpTtlTag ()  
 {
-  // for local use in stack only
-  return 0;
 }
 
 void 
@@ -362,4 +320,35 @@
   return m_ttl;
 }
 
+
+TypeId
+SocketIpTtlTag::GetTypeId (void)
+{
+  static TypeId tid = TypeId ("ns3::SocketIpTtlTag")
+    .SetParent<Tag> ()
+    .AddConstructor<SocketIpTtlTag> ()
+    ;
+  return tid;
+}
+TypeId
+SocketIpTtlTag::GetInstanceTypeId (void) const
+{
+  return GetTypeId ();
+}
+uint32_t 
+SocketIpTtlTag::GetSerializedSize (void) const
+{ 
+  return 0;
+}
+void 
+SocketIpTtlTag::Serialize (TagBuffer i) const
+{ 
+  // for local use in stack only
+}
+void 
+SocketIpTtlTag::Deserialize (TagBuffer i)
+{ 
+  // for local use in stack only
+}
+
 }//namespace ns3

--- a/src/node/socket.h	Wed May 21 19:00:38 2008 -0700
+++ b/src/node/socket.h	Wed May 21 22:40:18 2008 -0700
@@ -368,14 +368,15 @@
 {
 public:
   SocketRxAddressTag ();
-  static uint32_t GetUid (void);
-  void Print (std::ostream &os) const;
-  uint32_t GetSerializedSize (void) const;
-  void Serialize (Buffer::Iterator i) const;
-  uint32_t Deserialize (Buffer::Iterator i);
-
   void SetAddress (Address addr);
   Address GetAddress (void) const;
+
+  static TypeId GetTypeId (void);  
+  virtual TypeId GetInstanceTypeId (void) const;
+  virtual uint32_t GetSerializedSize (void) const;
+  virtual void Serialize (TagBuffer i) const;
+  virtual void Deserialize (TagBuffer i);
+
 private:
   Address m_address;
 };
@@ -388,14 +389,15 @@
 {
 public:
   SocketIpTtlTag ();
-  static uint32_t GetUid (void);
-  void Print (std::ostream &os) const;
-  uint32_t GetSerializedSize (void) const;
-  void Serialize (Buffer::Iterator i) const;
-  uint32_t Deserialize (Buffer::Iterator i);
-
   void SetTtl (uint8_t ttl);
   uint8_t GetTtl (void) const;
+
+  static TypeId GetTypeId (void);  
+  virtual TypeId GetInstanceTypeId (void) const;
+  virtual uint32_t GetSerializedSize (void) const;
+  virtual void Serialize (TagBuffer i) const;
+  virtual void Deserialize (TagBuffer i);
+
 private:
   uint8_t m_ttl;
 };

--- a/src/routing/olsr/olsr-agent-impl.cc	Wed May 21 19:00:38 2008 -0700
+++ b/src/routing/olsr/olsr-agent-impl.cc	Wed May 21 22:40:18 2008 -0700
@@ -312,7 +312,7 @@
   receivedPacket = socket->Recv ();
 
   SocketRxAddressTag tag;
-  bool found = receivedPacket->PeekTag (tag);
+  bool found = receivedPacket->FindFirstMatchingTag (tag);
   NS_ASSERT (found);
   Address sourceAddress = tag.GetAddress ();