--- a/CHANGES.html	Sun Dec 15 09:00:57 2013 +0100
+++ b/CHANGES.html	Sun Dec 15 09:26:02 2013 +0100
@@ -111,6 +111,9 @@
 
 <h2>Changes to existing API:</h2>
 <ul>
+    <li> It is now possible to use Ipv6PacketInfoTag from UDP applications in the
+      very same way as Ipv4PacketInfoTag. See Doxygen fo current limitations in
+  	  using Ipv[4,6]PacketInfoTag to set IP properties.</li>
     <li> A change in Ipv[4,6]Interface enforces the correct behaviour of IP 
       when a device do not support the minimum MTU requirements.
       This is set to 68 and 1280 octects respectively.

--- a/RELEASE_NOTES	Sun Dec 15 09:00:57 2013 +0100
+++ b/RELEASE_NOTES	Sun Dec 15 09:26:02 2013 +0100
@@ -21,6 +21,10 @@
 
 New user-visible features
 -------------------------
+- It is now possible to use Ipv6PacketInfoTag from UDP applications in the
+  very same way as Ipv4PacketInfoTag. See Doxygen fo current limitations in
+  using Ipv[4,6]PacketInfoTag to set IP properties.
+  
 - Ipv[4,6]Interfaces not respecting the minimum MTU requirements (68 octects
   for IPv4 and 1280 octects for IPv6) will be automatically set as Down.
   Warning: this might break some simulations (which hadn't to work anyway).
@@ -79,6 +83,7 @@
 - Bug 1776 - Improve CRC performance for CsmaNetDevice in emulation modes
 - Bug 1788 - unused private field warning
 - Bug 1789 - missing test condition for sigma in buildings-shadowing-test
+- Bug 1796 - Ipv6PacketInfoTag is not filled by UdpSocketImpl::ForwardUp6
 - Bug 1798 - Changing the rate of onOffApplication might stop transmission
 - Bug 1802 - FlowMon header deserialization problem with IPv4 fragments
 - Bug 1803 - Lookup /NodeList/4/DeviceList/0/LteEnbRrc/UeMap/0 got no matches

--- a/src/internet/model/ipv6-end-point.cc	Sun Dec 15 09:00:57 2013 +0100
+++ b/src/internet/model/ipv6-end-point.cc	Sun Dec 15 09:26:02 2013 +0100
@@ -96,7 +96,7 @@
   m_peerPort = port;
 }
 
-void Ipv6EndPoint::SetRxCallback (Callback<void, Ptr<Packet>, Ipv6Header, uint16_t> callback)
+void Ipv6EndPoint::SetRxCallback (Callback<void, Ptr<Packet>, Ipv6Header, uint16_t, Ptr<Ipv6Interface> > callback)
 {
   m_rxCallback = callback;
 }
@@ -111,11 +111,12 @@
   m_destroyCallback = callback;
 }
 
-void Ipv6EndPoint::ForwardUp (Ptr<Packet> p, Ipv6Header header, uint16_t port)
+void Ipv6EndPoint::ForwardUp (Ptr<Packet> p, Ipv6Header header, uint16_t port, Ptr<Ipv6Interface> incomingInterface)
 {
   if (!m_rxCallback.IsNull ())
     {
-      m_rxCallback (p, header, port);
+      Simulator::ScheduleNow (&Ipv6EndPoint::DoForwardUp, this, p, header, port,
+                              incomingInterface);
     }
 }
 
@@ -129,9 +130,9 @@
     }
 }
 
-void Ipv6EndPoint::DoForwardUp (Ptr<Packet> p, Ipv6Header header, uint16_t sport)
+void Ipv6EndPoint::DoForwardUp (Ptr<Packet> p, Ipv6Header header, uint16_t sport, Ptr<Ipv6Interface> incomingInterface)
 {
-  m_rxCallback (p, header, sport);
+  m_rxCallback (p, header, sport, incomingInterface);
 }
 
 void Ipv6EndPoint::DoForwardIcmp (Ipv6Address src, uint8_t ttl, uint8_t type, 

--- a/src/internet/model/ipv6-end-point.h	Sun Dec 15 09:00:57 2013 +0100
+++ b/src/internet/model/ipv6-end-point.h	Sun Dec 15 09:26:02 2013 +0100
@@ -27,6 +27,7 @@
 #include "ns3/callback.h"
 #include "ns3/ipv6-header.h"
 #include "ns3/net-device.h"
+#include "ns3/ipv6-interface.h"
 
 namespace ns3
 {
@@ -134,7 +135,7 @@
    * \brief Set the reception callback.
    * \param callback callback function
    */
-  void SetRxCallback (Callback<void, Ptr<Packet>, Ipv6Header, uint16_t> callback);
+  void SetRxCallback (Callback<void, Ptr<Packet>, Ipv6Header, uint16_t, Ptr<Ipv6Interface> > callback);
 
   /**
    * \brief Set the ICMP callback.
@@ -157,8 +158,9 @@
    * \param p the packet
    * \param header the packet header
    * \param port source port
+   * \param incomingInterface incoming interface
    */
-  void ForwardUp (Ptr<Packet> p, Ipv6Header header, uint16_t port);
+  void ForwardUp (Ptr<Packet> p, Ipv6Header header, uint16_t port, Ptr<Ipv6Interface> incomingInterface);
 
   /**
    * \brief Forward the ICMP packet to the upper level.
@@ -181,8 +183,9 @@
    * \param p packet
    * \param header the packet header
    * \param sport source port
+   * \param incomingInterface incoming interface
    */
-  void DoForwardUp (Ptr<Packet> p, Ipv6Header header, uint16_t sport);
+  void DoForwardUp (Ptr<Packet> p, Ipv6Header header, uint16_t sport, Ptr<Ipv6Interface> incomingInterface);
 
   /**
    * \brief ForwardIcmp wrapper.
@@ -223,7 +226,7 @@
   /**
    * \brief The RX callback.
    */
-  Callback<void, Ptr<Packet>, Ipv6Header, uint16_t> m_rxCallback;
+  Callback<void, Ptr<Packet>, Ipv6Header, uint16_t, Ptr<Ipv6Interface> > m_rxCallback;
 
   /**
    * \brief The ICMPv6 callback.

--- a/src/internet/model/tcp-l4-protocol.cc	Sun Dec 15 09:00:57 2013 +0100
+++ b/src/internet/model/tcp-l4-protocol.cc	Sun Dec 15 09:26:02 2013 +0100
@@ -507,7 +507,7 @@
     }
   NS_ASSERT_MSG (endPoints.size () == 1, "Demux returned more than one endpoint");
   NS_LOG_LOGIC ("TcpL4Protocol "<<this<<" forwarding up to endpoint/socket");
-  (*endPoints.begin ())->ForwardUp (packet, ipHeader, tcpHeader.GetSourcePort ());
+  (*endPoints.begin ())->ForwardUp (packet, ipHeader, tcpHeader.GetSourcePort (), interface);
   return IpL4Protocol::RX_OK;
 }
 

--- a/src/internet/model/tcp-socket-base.cc	Sun Dec 15 09:00:57 2013 +0100
+++ b/src/internet/model/tcp-socket-base.cc	Sun Dec 15 09:26:02 2013 +0100
@@ -811,7 +811,7 @@
 }
 
 void
-TcpSocketBase::ForwardUp6 (Ptr<Packet> packet, Ipv6Header header, uint16_t port)
+TcpSocketBase::ForwardUp6 (Ptr<Packet> packet, Ipv6Header header, uint16_t port, Ptr<Ipv6Interface> incomingInterface)
 {
   DoForwardUp (packet, header, port);
 }

--- a/src/internet/model/tcp-socket-base.h	Sun Dec 15 09:00:57 2013 +0100
+++ b/src/internet/model/tcp-socket-base.h	Sun Dec 15 09:26:02 2013 +0100
@@ -31,6 +31,7 @@
 #include "ns3/ipv4-header.h"
 #include "ns3/ipv4-interface.h"
 #include "ns3/ipv6-header.h"
+#include "ns3/ipv6-interface.h"
 #include "ns3/event-id.h"
 #include "tcp-tx-buffer.h"
 #include "tcp-rx-buffer.h"
@@ -221,8 +222,9 @@
    * \param packet the incoming packet
    * \param header the packet's IPv6 header
    * \param port the incoming port
+   * \param incomingInterface the incoming interface
    */
-  void ForwardUp6 (Ptr<Packet> packet, Ipv6Header header, uint16_t port);
+  void ForwardUp6 (Ptr<Packet> packet, Ipv6Header header, uint16_t port, Ptr<Ipv6Interface> incomingInterface);
 
   /**
    * \brief Called by TcpSocketBase::ForwardUp().

--- a/src/internet/model/udp-l4-protocol.cc	Sun Dec 15 09:00:57 2013 +0100
+++ b/src/internet/model/udp-l4-protocol.cc	Sun Dec 15 09:26:02 2013 +0100
@@ -403,7 +403,7 @@
   for (Ipv6EndPointDemux::EndPointsI endPoint = endPoints.begin ();
        endPoint != endPoints.end (); endPoint++)
     {
-      (*endPoint)->ForwardUp (packet->Copy (), header, udpHeader.GetSourcePort ());
+      (*endPoint)->ForwardUp (packet->Copy (), header, udpHeader.GetSourcePort (), interface);
     }
   return IpL4Protocol::RX_OK;
 }

--- a/src/internet/model/udp-socket-impl.cc	Sun Dec 15 09:00:57 2013 +0100
+++ b/src/internet/model/udp-socket-impl.cc	Sun Dec 15 09:26:02 2013 +0100
@@ -32,6 +32,7 @@
 #include "ns3/udp-socket-factory.h"
 #include "ns3/trace-source-accessor.h"
 #include "ns3/ipv4-packet-info-tag.h"
+#include "ns3/ipv6-packet-info-tag.h"
 #include "udp-socket-impl.h"
 #include "udp-l4-protocol.h"
 #include "ipv4-end-point.h"
@@ -965,7 +966,7 @@
 }
 
 void 
-UdpSocketImpl::ForwardUp6 (Ptr<Packet> packet, Ipv6Header header, uint16_t port)
+UdpSocketImpl::ForwardUp6 (Ptr<Packet> packet, Ipv6Header header, uint16_t port, Ptr<Ipv6Interface> incomingInterface)
 {
   NS_LOG_FUNCTION (this << packet << header.GetSourceAddress () << port);
 
@@ -974,6 +975,14 @@
       return;
     }
 
+  // Should check via getsockopt ()..
+  if (IsRecvPktInfo ())
+    {
+      Ipv6PacketInfoTag tag;
+      packet->RemovePacketTag (tag);
+      tag.SetRecvIf (incomingInterface->GetDevice ()->GetIfIndex ());
+      packet->AddPacketTag (tag);
+    }
 
   //Check only version 6 options
   if (IsIpv6RecvTclass ())

--- a/src/internet/model/udp-socket-impl.h	Sun Dec 15 09:00:57 2013 +0100
+++ b/src/internet/model/udp-socket-impl.h	Sun Dec 15 09:26:02 2013 +0100
@@ -136,8 +136,9 @@
    * \param packet the incoming packet
    * \param header the packet's IPv6 header
    * \param port the incoming port
+   * \param incomingInterface the incoming interface
    */
-  void ForwardUp6 (Ptr<Packet> packet, Ipv6Header header, uint16_t port);
+  void ForwardUp6 (Ptr<Packet> packet, Ipv6Header header, uint16_t port, Ptr<Ipv6Interface> incomingInterface);
 
   /**
    * \brief Kill this socket by zeroing its attributes (IPv4)