Internet: (fixes #2627) - Ipv6RawSocket must check bound interface

RELEASE_NOTES

@@ -65,6 +65,7 @@ Bugs fixed
 - Bug 2605 - A HT/VHT station transmitting to a legacy access point results in a null throughput
 - Bug 2607 - Minstrel HT manager results in an endless loop when a 802.11ac station is transmitting to a 802.11a access point
 - Bug 2614 - RIP header version should be set to 2
+- Bug 2627 - Ipv6RawSocket does not honor the bound interface when sending packets
 
 Known issues
 ------------

src/internet/model/ipv6-raw-socket-impl.cc

@@ -245,7 +245,7 @@ int Ipv6RawSocketImpl::SendTo (Ptr<Packet> p, uint32_t flags, const Address& toA
       hdr.SetDestinationAddress (dst);
       SocketErrno err = ERROR_NOTERROR;
       Ptr<Ipv6Route> route = 0;
-      Ptr<NetDevice> oif (0); /*specify non-zero if bound to a source address */
+      Ptr<NetDevice> oif = m_boundnetdevice; //specify non-zero if bound to a specific device
 
       if (!m_src.IsAny ())
         {