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RFC 6269

"Issues with IP Address Sharing", June 2011

Canonical URL:
http://www.rfc-editor.org/rfc/rfc6269.txt
This document is also available in this non-normative format: PDF.
Status:
INFORMATIONAL
Authors:
M. Ford, Ed.
M. Boucadair
A. Durand
P. Levis
P. Roberts
Stream:
IETF
Source:
intarea (int)

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Abstract

The completion of IPv4 address allocations from IANA and the Regional Internet Registries (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. This document is not an Internet Standards Track specification; it is published for informational purposes.


For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 4844.


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