I-D ACTION:draft-ietf-ipngwg-bsd-api-05.txt

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A Revised Internet-Draft is available from the on-line Internet-Drafts 
directories. This draft is a work item of the IPNG Working Group of the 
IETF.                                                                      

       Title     : Basic Socket Interface Extensions for IPv6              
       Author(s) : R. Gilligan, S. Thomson, J. Bound
       Filename  : draft-ietf-ipngwg-bsd-api-05.txt
       Pages     : 25
       Date      : 04/19/1996

In order to implement the version 6 Internet Protocol (IPv6) [1] in an 
operating system based on Berkeley Unix (4.x BSD), changes must be made to 
the application program interface (API).  TCP/IP applications written for 
BSD-based operating systems have in the past enjoyed a high degree of 
portability because most of the systems derived from BSD provide the same 
API, known informally as "the socket interface".  We would like the same 
portability with IPv6.  This memo presents a basic set of extensions to the
BSD socket API to support IPv6.  The changes include a new data structure 
to carry IPv6 addresses, new address conversion functions, and some new 
setsockopt() options.  The extensions are designed to provide access to 
IPv6 features, while introducing a minimum of change into the system and 
providing complete compatibility for existing IPv4 applications.  
Additional extensions for new IPv6 features may be added at a later time.  

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