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[lwip-devel] [patch #7808] IPv6: Add IPV6_V6ONLY functionality

From: James Smith
Subject: [lwip-devel] [patch #7808] IPv6: Add IPV6_V6ONLY functionality
Date: Wed, 27 Jun 2012 09:44:59 +0000
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20111108 Fedora/3.6.24-1.fc14 Firefox/3.6.24


                 Summary: IPv6: Add IPV6_V6ONLY functionality
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: rallysmith
            Submitted on: Wed 27 Jun 2012 09:44:58 AM GMT
                Category: None
                Priority: 5 - Normal
                  Status: None
                 Privacy: Public
             Assigned to: None
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None



As recently discussed on lwip-devel a patch to implement IPV6_V6ONLY support
to make use of tcp_listen_dual when using the sequential API listen()

This (by default) allows AF_INET6 sockets to accept IPv4 connections on
suitable ANY-address connections.

This however does mean a change in the "default" behaviour of previous
LWIP_IPV6 builds where there was no control available and the default use of
tcp_listen meant IPv4 connections were refused. This change in behaviour
between the pre- and post-patched worlds is to conform to the RFC#3493
requirement of the feature being OFF by default.


File Attachments:

Date: Wed 27 Jun 2012 09:44:58 AM GMT  Name: ipv6_v6only.patch  Size: 7kB  
By: rallysmith



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