RFC 3542 (rfc3542) - Page 1 of 77

Advanced Sockets Application Program Interface (API) for IPv6

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Network Working Group                                         W. Stevens
Request for Comments: 3542                                     M. Thomas
Obsoletes: 2292                                               Consultant
Category: Informational                                      E. Nordmark
                                                               T. Jinmei
                                                                May 2003

     Advanced Sockets Application Program Interface (API) for IPv6

Status of this Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2003).  All Rights Reserved.


   This document provides sockets Application Program Interface (API) to
   support "advanced" IPv6 applications, as a supplement to a separate
   specification, RFC 3493.  The expected applications include Ping,
   Traceroute, routing daemons and the like, which typically use raw
   sockets to access IPv6 or ICMPv6 header fields.  This document
   proposes some portable interfaces for applications that use raw
   sockets under IPv6.  There are other features of IPv6 that some
   applications will need to access: interface identification
   (specifying the outgoing interface and determining the incoming
   interface), IPv6 extension headers, and path Maximum Transmission
   Unit (MTU) information.  This document provides API access to these
   features too.  Additionally, some extended interfaces to libraries
   for the "r" commands are defined.  The extension will provide better
   backward compatibility to existing implementations that are not

Stevens, et al.              Informational

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