Issues with IP Address Sharing

Document Type Replaced Internet-Draft (individual)
Authors Mat Ford  , Mohamed Boucadair  , Alain Durand  , Pierre Levis  , Phil Roberts 
Last updated 2010-07-07 (latest revision 2010-03-08)
Replaced by RFC 6269
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Expired & archived
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IESG IESG state Replaced by draft-ietf-intarea-shared-addressing-issues
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


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. Solution- specific discussions are out of scope.


Mat Ford (
Mohamed Boucadair (
Alain Durand (
Pierre Levis (
Phil Roberts (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)