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Versions: 00 01 draft-ietf-v6ops-clatip

INTERNET-DRAFT                                             Cameron Byrne
Intended Status: Informational                               T-Mobile US
Expires: April 13, 2014                                 October 10, 2013


                       464XLAT CLAT IPv4 Address
                      draft-byrne-v6ops-clatip-00


Abstract

   DS-Lite [RFC6333] directs IANA to reserve 192.0.0.0/29 for the use of
   the B4 element.  This memo generalizes that reservation to include a
   similar purpose on the host-based CLAT IPv4 interfaces in the 464XLAT
   architecture [RFC6877].


Status of this Memo

   This Internet-Draft is submitted to IETF in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF), its areas, and its working groups.  Note that
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Copyright and License Notice

   Copyright (c) 2013 IETF Trust and the persons identified as the
   document authors. All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document. Please review these documents



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   carefully, as they describe your rights and restrictions with respect
   to this document. Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.



Table of Contents

   1  Introduction  . . . . . . . . . . . . . . . . . . . . . . . . .  3
   2.  Choosing 192.0.0.0/29  . . . . . . . . . . . . . . . . . . . .  3
   3  Security Considerations . . . . . . . . . . . . . . . . . . . .  3
   4  IANA Considerations . . . . . . . . . . . . . . . . . . . . . .  3
   5  References  . . . . . . . . . . . . . . . . . . . . . . . . . .  3
     5.1  Normative References  . . . . . . . . . . . . . . . . . . .  3
   Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . .  4


































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1  Introduction

   464XLAT [RFC6877] describes an architecture for providing IPv4
   communication over an IPv6-only network.  One of the methods
   described in [RFC6877] is for the client side translator (CLAT) to be
   embedded in the host, such as a smartphone.  In this scenario, the
   host must have an IPv4 address configured to present to the network
   stack and for applications to bind sockets.

   Any locally unique IPv4 address can be configured on the host-based
   464XLAT CLAT interface.  This memo directs IANA to update its
   registry of 192.0.0.0/29 to include the use for the IPv4 interface in
   host based CLAT by changing the allocation from DS-Lite to "IPv6
   Transition Technology System Subnet".

2.  Choosing 192.0.0.0/29

   To avoid conflicts with any other network that may communicate with
   the CLAT, a unique address must be assigned.

   IANA has defined a well-known range, 192.0.0.0/29, in [RFC6333],
   which is dedicated for DS-lite. 192.0.0.0 is the reserved subnet
   address. As defined in [RFC6333], this subnet is only present between
   the B4 and the AFTR and is never emitted "on the wire".

   This range may be generalized to include 464XLAT with host based CLAT
   and will continue to never be emitted "on the wire".


3  Security Considerations

   No new security considerations beyond what is described [RFC6333] and
   [RFC6877].


4  IANA Considerations

   IANA is directed to generalize the reservation of 192.0.0.0/29 from
   DS-lite to "IPv6 Transition Technology System Subnet".


5  References

5.1  Normative References

   [RFC6333]  Durand, A., Droms, R., Woodyatt, J., and Y. Lee, "Dual-
              Stack Lite Broadband Deployments Following IPv4
              Exhaustion", RFC 6333, August 2011.



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   [RFC6877]  Mawatari, M., Kawashima, M., and C. Byrne, "464XLAT:
              Combination of Stateful and Stateless Translation",
              RFC6877, April 2013.



Authors' Addresses


              Cameron Byrne
              Bellevue, WA, USA
              Email: Cameron.Byrne@T-Mobile.com







































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