[Int-area] I-D Action:draft-ietf-intarea-shared-addressing-issues-04.txt

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


	Title           : Issues with IP Address Sharing
	Author(s)       : M. Ford, et al.
	Filename        : draft-ietf-intarea-shared-addressing-issues-04.txt
	Pages           : 30
	Date            : 2011-02-21

The completion of IPv4 address allocations from IANA and the RIRs is
causing service providers around the world to question how they will
continue providing IPv4 connectivity service to their subscribers
when there are no longer sufficient IPv4 addresses to allocate them
one per subscriber.  Several possible solutions to this problem are
now emerging based around the idea of shared IPv4 addressing.  These
solutions give rise to a number of issues and this memo identifies
those common to all such address sharing approaches.  Such issues
include application failures, additional service monitoring
complexity, new security vulnerabilities and so on.  Solution-
specific discussions are out of scope.

Deploying IPv6 is the only perennial way to ease pressure on the
public IPv4 address pool without the need for address sharing
mechanisms that give rise to the issues identified herein.

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