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Versions: 00 01                                                         
Network Working Group                                          E. Horley
Internet-Draft                                                T. Coffeen
Intended status: Informational                                   S. Hogg
Expires: December 7, 2021                                      HexaBuild
                                                             N. Buraglio
                                                 Energy Sciences Network
                                                                K. Myers
                                                           IP ArchiTechs
                                                             C. Cummings
                                                 Energy Sciences Network
                                                                R. White
                                                        Juniper Networks
                                                            June 5, 2021


                      Expanding IPv6 Lab Use Space
                       draft-horley-v6ops-lab-00

Abstract

   TTo reduce the likelihood of addressing conflicts and confusion
   between lab deployments and non-lab (i.e., production) deployments,
   an IPv6 unicast address prefix is reserved for use in lab, proof-of-
   concept, and validation networks as well as for for any similar use
   case.  This document describes the use of the IPv6 address prefix
   0200::/7 as a prefix reserved for this purpose (repurposing the
   deprecated OSI NSAP-mapped prefix).

Status of This Memo

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

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on December 7, 2021.







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Copyright Notice

   Copyright (c) 2021 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
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   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  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  New Lab IPv6 Address Prefix . . . . . . . . . . . . . . . . .   3
   3.  Operational Implications  . . . . . . . . . . . . . . . . . .   3
   4.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   3
   5.  Security Considerations . . . . . . . . . . . . . . . . . . .   3
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   3
   7.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   4
     7.1.  Normative References  . . . . . . . . . . . . . . . . . .   4
     7.2.  Informative References  . . . . . . . . . . . . . . . . .   4
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   5

1.  Introduction

   The address architecture for IPv6 ([RFC4291]) does not explicitly
   define any prefixes allocated exclusively for lab use, nor is such
   address space allocated in [RFC6890].  While lab deployments could
   potentially use IPv6 address prefixes typically assigned and
   configured in non-lab network, the use of such addressing in lab
   environments may create addressing conflicts and operational
   confusion.  For instance, designing labs utilizing ULA fc00::/7
   [RFC4193] is problematic due to the random global ID requirement
   preventing hierarchical network prefix design possibilities.
   Further, default address selection behavior [RFC6724] by end nodes
   may result in a depreferencing of such addresses and prevent lab
   deployments from accurately modeling their desired non-lab
   equivalents.

   To resolve these problems involved in building large scale lab
   networks, and pre-staging large-scale networks for deployment, this
   document allocates the IPv6 address prefix 0200::/7 for these
   purposes.



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2.  New Lab IPv6 Address Prefix

   The prefix reserved for lab and testing purposes is 0200::/7.

3.  Operational Implications

   This space SHOULD NOT be employed for addressing use cases which are
   already defined in other RFCs, such as addrfesses set apart for
   documentation, testing, etc.

   Because this address prefix has previously been used for the OSI
   NSAP-mapped prefix set in [RFC4048] and [RFC4548], and deprecated,
   this address prefix is already limited in its usability.  In
   addition, the address prefix was returned to IANA and is available to
   be marked for lab or other purposes.

   This assignment implies that IPv6 network operators SHOULD add this
   address prefix to the list of non-routeable IPv6 address space, and
   if packet filters are deployed, then this address prefix SHOULD be
   added to packet filters.  This is not a local-use address prefix so
   these filters may be used in both local and public contexts.

4.  IANA Considerations

   IANA is to record the reservation of the IPv6 global unicast address
   prefix 0200::/7 as a lab-only prefix in the IPv6 address registry.
   No end party is to be assigned this address.

5.  Security Considerations

   The addresses assigned for lab and staging use SHOULD be filtered as
   noted above.

   Setting aside address space for lab and staging use, and adding this
   address space to common filters to prevent destinations in this space
   from being routed in production networks (including the global
   Internet) improves security by preventing the leakage of prefixes
   used for testing into production environments.  As such, setting
   aside this space improves the overall security posture of the
   Internet.

6.  Acknowledgements

   The authors acknowledge the work of Bob Hinden and Stephen Deering,
   in authoring the protocol standard and the addressing architecture
   for IPv6.





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7.  References

7.1.  Normative References

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119,
              DOI 10.17487/RFC2119, March 1997,
              <https://www.rfc-editor.org/info/rfc2119>.

7.2.  Informative References

   [RFC3515]  Sparks, R., "The Session Initiation Protocol (SIP) Refer
              Method", RFC 3515, DOI 10.17487/RFC3515, April 2003,
              <https://www.rfc-editor.org/info/rfc3515>.

   [RFC4048]  Carpenter, B., "RFC 1888 Is Obsolete", RFC 4048,
              DOI 10.17487/RFC4048, April 2005,
              <https://www.rfc-editor.org/info/rfc4048>.

   [RFC4193]  Hinden, R. and B. Haberman, "Unique Local IPv6 Unicast
              Addresses", RFC 4193, DOI 10.17487/RFC4193, October 2005,
              <https://www.rfc-editor.org/info/rfc4193>.

   [RFC4291]  Hinden, R. and S. Deering, "IP Version 6 Addressing
              Architecture", RFC 4291, DOI 10.17487/RFC4291, February
              2006, <https://www.rfc-editor.org/info/rfc4291>.

   [RFC4548]  Gray, E., Rutemiller, J., and G. Swallow, "Internet Code
              Point (ICP) Assignments for NSAP Addresses", RFC 4548,
              DOI 10.17487/RFC4548, May 2006,
              <https://www.rfc-editor.org/info/rfc4548>.

   [RFC5180]  Popoviciu, C., Hamza, A., Van de Velde, G., and D.
              Dugatkin, "IPv6 Benchmarking Methodology for Network
              Interconnect Devices", RFC 5180, DOI 10.17487/RFC5180, May
              2008, <https://www.rfc-editor.org/info/rfc5180>.

   [RFC6724]  Thaler, D., Ed., Draves, R., Matsumoto, A., and T. Chown,
              "Default Address Selection for Internet Protocol Version 6
              (IPv6)", RFC 6724, DOI 10.17487/RFC6724, September 2012,
              <https://www.rfc-editor.org/info/rfc6724>.

   [RFC6890]  Cotton, M., Vegoda, L., Bonica, R., Ed., and B. Haberman,
              "Special-Purpose IP Address Registries", BCP 153,
              RFC 6890, DOI 10.17487/RFC6890, April 2013,
              <https://www.rfc-editor.org/info/rfc6890>.





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Authors' Addresses

   Ed Horley
   HexaBuild

   Email: ed@hexabuild.io


   Tom Coffeen
   HexaBuild

   Email: tom@hexabuild.io


   Scott Hogg
   HexaBuild

   Email: scott@hexabuild.io


   Nick Buraglio
   Energy Sciences Network

   Email: buraglio@es.net


   Kevin Myers
   IP ArchiTechs

   Email: kevin.myers@iparchitechs.com


   Chris Cummings
   Energy Sciences Network

   Email: chriscummings@es.net


   Russ White
   Juniper Networks

   Email: russ@riw.us









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