I-D ACTION:draft-cmetz-v6ops-v4mapped-api-harmful-00.txt

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	Title		: IPv4-Mapped Address API Considered Harmful
	Author(s)	: C. Metz, J. Hagino
	Filename	: draft-cmetz-v6ops-v4mapped-api-harmful-00.txt
	Pages		: 5
	Date		: 2002-10-30
	
The IPv6 Addressing Architecture [Hinden, 1998] defines the 'IPv4-mapped
IPv6 address.' This representation is used in the IPv6 basic API
[Gilligan, 1999] to denote IPv4 addresses using AF_INET6 sockets.  The
use of IPv4-mapped addresses on AF_INET6 sockets degrades portability,
complicates IPv6 systems, and is likely to create security problems.
This document discusses each issue in turn.  Finally, it proposes to
resolve these problems by recommending deprecation of this mechanism.

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