Network Working Group                                         R. Hinden
Request for Comments: 2471                                        Nokia
Obsoletes: 1897                                                 R. Fink
Category: Experimental                                             LBNL
                                                             J. Postel
                                                                   ISI
                                                         December 1998


                   IPv6 Testing Address Allocation

Status of this Memo

  This memo defines an Experimental Protocol for the Internet
  community.  It does not specify an Internet standard of any kind.
  Discussion and suggestions for improvement are requested.
  Distribution of this memo is unlimited.

Copyright Notice

  Copyright (C) The Internet Society (1998).  All Rights Reserved.

1.0 Introduction

  This document describes an allocation plan for IPv6 addresses to be
  used in testing IPv6 prototype software.  These addresses are
  temporary and will be reclaimed in the future.  Any IPv6 system using
  these addresses will have to renumber at some time in the future.
  These addresses will not to be routable in the Internet other than
  for IPv6 testing.

  The address format for the IPv6 test address is consistent with the
  "Aggregatable Global Unicast Address Allocation" [AGGR] and "TLA and
  NLA Assignment Rules" [TLAASN].

  This document is intended to replace RFC 1897 "IPv6 Testing Address
  Allocation", January 1996.  RFC 1897 will become historic.

  The addresses described in this document are consistent with the IPv6
  Addressing Architecture [ARCH].  They may be assigned to nodes
  manually, with IPv6 Auto Address Allocation [AUTO], or with DHCP for
  IPv6 [DHCPv6].

  The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
  "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
  document are to be interpreted as described in [RFC2119].





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2.0 Address Format

  The Aggregatable Global Unicast Address Allocation format defined in
  [AGGR] is as follows:

     | 3 |  13 |    32     |   16   |          64 bits               |
     +---+-----+-----------+--------+--------------------------------+
     |FP | TLA | NLA ID    | SLA ID |         Interface ID           |
     |   | ID  |           |        |                                |
     +---+-----+-----------+--------+--------------------------------+

  where:

     FP = 001 = Format Prefix

          This is the Format Prefix used to identify aggregatable
          global unicast addresses.

     TLA = 0x1FFE = Top-Level Aggregation Identifier

          This is a TLA ID assigned by the IANA for 6bone testing under
          the auspices of the IETF IPng Transition Working Group 6bone
          testbed activity.  It is to be administered by the chair of
          the 6bone activity (currently Bob Fink <[email protected]>).
          The use of this TLA ID is temporary.  All users of these
          addresses in this TLA ID will be required to renumber at some
          time in the future.

     NLA ID = Next-Level Aggregation Identifier

          The NLA ID space will be assigned, by the TLA ID
          administrator, in an addressing hierarchy sufficient to
          identify transit networks and end user sites consistent with
          the architecture and topology of the 6bone. This will provide
          a multi-level transit service consistent with the 6bone goals
          of fully testing IPv6 technology in real use environments.

     SLA ID = Site-Level Aggregation Identifier

          The SLA ID field is used by an individual organization to
          create its own local addressing hierarchy and to identify
          subnets.  Assignment of the SLA ID field is the
          responsibility of each individual organization.








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     Interface ID

          This is the interface identifier of the interface on the link
          as defined in the appropriate IPv6 over <link> document, such
          as [ETHER], [FDDI], etc.

4.0 References

  [ARCH]    Hinden, R., "IP Version 6 Addressing Architecture",
            RFC 2373, July 1998.

  [AGGR]    Hinden, R., Deering, S., O'Dell, M., "An Aggregatable
            Global Unicast Address Format", RFC 2374, July 1998.

  [AUTO]    Thompson, S. and T. Narten, "IPv6 Stateless Address
            Autoconfiguration", RFC 1971, August 1996.

  [DHCP6]   Bound, J., "Host Configuration Protocol for IPv6", Work in
            Progress.

  [ETHER]   Crawford, M., "Transmission of IPv6 Packets over Ethernet
            Networks", RFC 2464, December 1998.

  [FDDI]    Crawford, M., "Transmission of IPv6 Packets over FDDI
            Networks", RFC 2467, December 1998.

  [RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
            Requirement Levels", BCP 14, RFC 2119, March 1997.

  [TLAASN]  Hinden, R., "TLA and NLA Assignment Rules", Work in
            Progress.

5.0 Security Considerations

  This document defines a test approach for creating aggregatable
  address consistent with [AGGR].  It does not have any direct impact
  on Internet infrastructure security.  Authentication of IPv6 packets
  is defined in [AUTH].













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6.0  Authors' Addresses

  Robert M. Hinden
  Nokia
  232 Java Drive
  Sunnyvale, CA 94089
  USA

  Phone: +1 408 990-2004
  EMail: [email protected]


  Robert Fink
  Lawrence Berkeley National Laboratory
  MS 50A-3111
  Berkeley, CA 94720
  USA

  Phone: +1 510 486-5692
  EMail: [email protected]


  Jon Postel (Deceased)
  Information Sciences Institute
  4676 Admiralty Way
  Marina del Rey, CA 90292-6695
  USA
























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7.0  Full Copyright Statement

  Copyright (C) The Internet Society (1998).  All Rights Reserved.

  This document and translations of it may be copied and furnished to
  others, and derivative works that comment on or otherwise explain it
  or assist in its implementation may be prepared, copied, published
  and distributed, in whole or in part, without restriction of any
  kind, provided that the above copyright notice and this paragraph are
  included on all such copies and derivative works.  However, this
  document itself may not be modified in any way, such as by removing
  the copyright notice or references to the Internet Society or other
  Internet organizations, except as needed for the purpose of
  developing Internet standards in which case the procedures for
  copyrights defined in the Internet Standards process must be
  followed, or as required to translate it into languages other than
  English.

  The limited permissions granted above are perpetual and will not be
  revoked by the Internet Society or its successors or assigns.

  This document and the information contained herein is provided on an
  "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
  TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
  BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
  HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
  MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
























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