Tech-invite3GPPspaceIETF RFCsSIP
929190898887868584838281807978777675747372717069686766656463626160595857565554535251504948474645444342414039383736353433323130292827262524232221201918171615141312111009080706050403020100
in Index   Prev   Next

RFC 7793

Adding 100.64.0.0/10 Prefixes to the IPv4 Locally-Served DNS Zones Registry

Pages: 6
Best Current Practice: 163
BCP 163 is also:  6303

Top   ToC   RFC7793 - Page 1
Internet Engineering Task Force (IETF)                        M. Andrews
Request for Comments: 7793                                           ISC
BCP: 163                                                        May 2016
Category: Best Current Practice
ISSN: 2070-1721


                  Adding 100.64.0.0/10 Prefixes to the
                 IPv4 Locally-Served DNS Zones Registry

Abstract

RFC 6598 specifies that "Reverse DNS queries for Shared Address Space addresses [100.64.0.0/10] MUST NOT be forwarded to the global DNS infrastructure." This document formally directs IANA to add the associated zones to the "IPv4 Locally-Served DNS Zones Registry" to prevent such queries from accidentally leaking to the global DNS infrastructure. Status of This Memo This memo documents an Internet Best Current Practice. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on BCPs is available in Section 2 of RFC 5741. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc7793. Copyright Notice Copyright (c) 2016 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 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.
Top   ToC   RFC7793 - Page 2

Table of Contents

1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 2. Changes to the IPv4 Locally-Served DNS Zones Registry . . . . 2 2.1. RFC 6598 Zones . . . . . . . . . . . . . . . . . . . . . 2 3. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 5 4. Security Considerations . . . . . . . . . . . . . . . . . . . 5 5. Normative References . . . . . . . . . . . . . . . . . . . . 5 Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . 6 Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 6

1. Introduction

[RFC6598] specifies that "Reverse DNS queries for Shared Address Space addresses [100.64.0.0/10] MUST NOT be forwarded to the global DNS infrastructure." [RFC6303] provides guidance on handling such queries. This document directs the IANA to add the IPv4 reverse zones corresponding to 100.64.0.0/10, a netblock reserved in [RFC6598], to the "IPv4 Locally-Served DNS Zone Registry" established in [RFC6303]. Unlike the addresses described in [RFC1918], which are not expected to be seen by other parties, the addresses defined by [RFC6598] are expected to be seen by parties other than those deploying the addresses. Therefore, it is more crucial that recursive nameservers default to serving these zones locally.

2. Changes to the IPv4 Locally-Served DNS Zones Registry

IANA has added the zones listed in "RFC 6598 Zones" (Section 2.1) to the "IPv4 Locally-Served DNS Zone Registry".

2.1. RFC 6598 Zones

64.100.IN-ADDR.ARPA 65.100.IN-ADDR.ARPA 66.100.IN-ADDR.ARPA 67.100.IN-ADDR.ARPA 68.100.IN-ADDR.ARPA 69.100.IN-ADDR.ARPA 70.100.IN-ADDR.ARPA
Top   ToC   RFC7793 - Page 3
      71.100.IN-ADDR.ARPA

      72.100.IN-ADDR.ARPA

      73.100.IN-ADDR.ARPA

      74.100.IN-ADDR.ARPA

      75.100.IN-ADDR.ARPA

      76.100.IN-ADDR.ARPA

      77.100.IN-ADDR.ARPA

      78.100.IN-ADDR.ARPA

      79.100.IN-ADDR.ARPA

      80.100.IN-ADDR.ARPA

      81.100.IN-ADDR.ARPA

      82.100.IN-ADDR.ARPA

      83.100.IN-ADDR.ARPA

      84.100.IN-ADDR.ARPA

      85.100.IN-ADDR.ARPA

      86.100.IN-ADDR.ARPA

      87.100.IN-ADDR.ARPA

      88.100.IN-ADDR.ARPA

      89.100.IN-ADDR.ARPA

      90.100.IN-ADDR.ARPA

      91.100.IN-ADDR.ARPA

      92.100.IN-ADDR.ARPA

      93.100.IN-ADDR.ARPA

      94.100.IN-ADDR.ARPA
Top   ToC   RFC7793 - Page 4
      95.100.IN-ADDR.ARPA

      96.100.IN-ADDR.ARPA

      97.100.IN-ADDR.ARPA

      98.100.IN-ADDR.ARPA

      99.100.IN-ADDR.ARPA

      100.100.IN-ADDR.ARPA

      101.100.IN-ADDR.ARPA

      102.100.IN-ADDR.ARPA

      103.100.IN-ADDR.ARPA

      104.100.IN-ADDR.ARPA

      105.100.IN-ADDR.ARPA

      106.100.IN-ADDR.ARPA

      107.100.IN-ADDR.ARPA

      108.100.IN-ADDR.ARPA

      109.100.IN-ADDR.ARPA

      110.100.IN-ADDR.ARPA

      111.100.IN-ADDR.ARPA

      112.100.IN-ADDR.ARPA

      113.100.IN-ADDR.ARPA

      114.100.IN-ADDR.ARPA

      115.100.IN-ADDR.ARPA

      116.100.IN-ADDR.ARPA

      117.100.IN-ADDR.ARPA

      118.100.IN-ADDR.ARPA
Top   ToC   RFC7793 - Page 5
      119.100.IN-ADDR.ARPA

      120.100.IN-ADDR.ARPA

      121.100.IN-ADDR.ARPA

      122.100.IN-ADDR.ARPA

      123.100.IN-ADDR.ARPA

      124.100.IN-ADDR.ARPA

      125.100.IN-ADDR.ARPA

      126.100.IN-ADDR.ARPA

      127.100.IN-ADDR.ARPA

3. IANA Considerations

Per this document, IANA has added the zones listed in "RFC 6598 Zones" (Section 2.1) to the "IPv4 Locally-Served DNS Zone Registry". IANA is reminded that an insecure delegation for these zones is required for compliance with [RFC6303] to break the DNSSEC chain of trust.

4. Security Considerations

This document does not present additional security risks to the Internet than those described in [RFC6303] and [RFC6598].

5. Normative References

[RFC1918] Rekhter, Y., Moskowitz, B., Karrenberg, D., de Groot, G., and E. Lear, "Address Allocation for Private Internets", BCP 5, RFC 1918, DOI 10.17487/RFC1918, February 1996, <http://www.rfc-editor.org/info/rfc1918>. [RFC6303] Andrews, M., "Locally Served DNS Zones", BCP 163, RFC 6303, DOI 10.17487/RFC6303, July 2011, <http://www.rfc-editor.org/info/rfc6303>. [RFC6598] Weil, J., Kuarsingh, V., Donley, C., Liljenstolpe, C., and M. Azinger, "IANA-Reserved IPv4 Prefix for Shared Address Space", BCP 153, RFC 6598, DOI 10.17487/RFC6598, April 2012, <http://www.rfc-editor.org/info/rfc6598>.
Top   ToC   RFC7793 - Page 6

Acknowledgements

The author would like to thank Joe Abley for his review comments.

Author's Address

M. Andrews Internet Systems Consortium 950 Charter Street Redwood City, CA 94063 United States Email: marka@isc.org