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+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.
+
+
+
+Andrews Best Current Practice [Page 1]
+\f
+RFC 7793 IPv4 Locally-Served DNS Zones Additions May 2016
+
+
+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
+
+
+
+Andrews Best Current Practice [Page 2]
+\f
+RFC 7793 IPv4 Locally-Served DNS Zones Additions May 2016
+
+
+ 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
+
+
+
+
+Andrews Best Current Practice [Page 3]
+\f
+RFC 7793 IPv4 Locally-Served DNS Zones Additions May 2016
+
+
+ 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
+
+
+
+
+Andrews Best Current Practice [Page 4]
+\f
+RFC 7793 IPv4 Locally-Served DNS Zones Additions May 2016
+
+
+ 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>.
+
+
+
+
+Andrews Best Current Practice [Page 5]
+\f
+RFC 7793 IPv4 Locally-Served DNS Zones Additions May 2016
+
+
+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
+
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+Andrews Best Current Practice [Page 6]
+\f
projects / thirdparty / bind9.git / commitdiff
