[lwip-devel] [task #14187] Dual Stack sendto with socket APIs

[Aditya Prakash]

URL:
  <http://savannah.nongnu.org/task/?14187>

                 Summary: Dual Stack sendto with socket APIs
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: adirny
            Submitted on: Thu 20 Oct 2016 05:01:53 AM GMT
                Category: socket/netconn
         Should Start On: Thu 20 Oct 2016 12:00:00 AM GMT
   Should be Finished on: Thu 20 Oct 2016 12:00:00 AM GMT
                Priority: 5 - Normal
                  Status: None
                 Privacy: Public
        Percent Complete: 0%
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None
                  Effort: 0.00

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Details:

Using sento() on a IPv6 UDP socket to a v4 address fails in current version.
In the function udp_sendto_if_chksum(), src IP is returned as null.

However, appending ::ffff: to the v4 address should allow communication to
IPv4 addresses as per RFC3493, section 3.7.




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