Network Working Group                                           J. Arkko
Internet-Draft                                                  Ericsson
Updates: 1166 (if approved)                                    M. Cotton
Intended status: Informational                                 L. Vegoda
Expires: December 14, 2009                                         ICANN
                                                           June 12, 2009


             IPv4 Address Blocks Reserved for Documentation
                      draft-iana-ipv4-examples-00

Status of this Memo

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Abstract

   Three IPv4 unicast address blocks are reserved for use in examples in



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   specifications and other documents.  This document describes the use
   of these blocks.


1.  Introduction

   This document describes the IPv4 address blocks that are provided for
   use in documentation.  The use of designated address ranges for
   documentation and examples reduces the likelihood of conflicts and
   confusion arising from the use of addresses assigned for some other
   purpose.

   [RFC1166] reserves the first of the three address blocks,
   192.0.2.0/24.  The other two address blocks have recently been
   allocated for this purpose, to ease the writing of examples involving
   addresses from multiple networks.

   These addresses are complementary to other documentation ranges
   defined in the IETF, including the IPv6 documentation prefixes
   [RFC3849] and example domain names [RFC2606].


2.  Terminology

   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 BCP 14, [RFC2119].


3.  Documentation Address Blocks

   The blocks 192.0.2.0/24 (TEST-NET-1), 198.51.100.0/24 (TEST-NET-2),
   and 203.0.113.0/24 (TEST-NET-3) are provided for use in
   documentation.


4.  Operational Implications

   Addresses within the TEST-NET-1, TEST-NET-2, and TEST-NET-3 blocks
   SHOULD NOT appear on the public Internet and are used without any
   coordination with IANA or an Internet registry [RFC2050].  Network
   operators SHOULD add these address blocks to the list of non-
   routeable address space, and if packet filters are deployed, then
   this address block SHOULD be added to packet filters.

   These blocks are not for local use, and the filters may be used in
   both local and public contexts.




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5.  Security Considerations

   This document has no security implications.


6.  IANA Considerations

   IANA should record the allocation of the three address blocks in the
   IPv4 address registry.  No end party is to be assigned these
   addresses.


7.  References

7.1.  Normative References

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

7.2.  Informative References

   [RFC1166]  Kirkpatrick, S., Stahl, M., and M. Recker, "Internet
              numbers", RFC 1166, July 1990.

   [RFC2050]  Hubbard, K., Kosters, M., Conrad, D., Karrenberg, D., and
              J. Postel, "INTERNET REGISTRY IP ALLOCATION GUIDELINES",
              BCP 12, RFC 2050, November 1996.

   [RFC2606]  Eastlake, D. and A. Panitz, "Reserved Top Level DNS
              Names", BCP 32, RFC 2606, June 1999.

   [RFC3849]  Huston, G., Lord, A., and P. Smith, "IPv6 Address Prefix
              Reserved for Documentation", RFC 3849, July 2004.


Appendix A.  Acknowledgments

   The authors would like to offer a special note of thanks to APNIC,
   which nominated 198.51.100.0/24 and 203.0.113.0/24 for this purpose.
   The authors would also like to acknowledge that this document
   inherits material from [RFC3849].

   The authors would also like to thank Geoff Huston, Peter Koch, Ulf
   Olsson and others for interesting discussions of this topic.







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Authors' Addresses

   Jari Arkko
   Ericsson
   Jorvas  02420
   Finland

   Email: jari.arkko@piuha.net


   Michelle Cotton
   Internet Corporation for Assigned Names and Numbers
   4676 Admiralty Way, Suite 330
   Marina del Rey  90292
   United States of America

   Phone: +310-823-9358
   Email: michelle.cotton@icann.org
   URI:   http://www.iana.org/


   Leo Vegoda
   Internet Corporation for Assigned Names and Numbers
   4676 Admiralty Way, Suite 330
   Marina del Rey  90292
   United States of America

   Phone: +310-823-9358
   Email: leo.vegoda@icann.org
   URI:   http://www.iana.org/





















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