dnsop S. Moonesamy
Internet-Draft
Intended status: Best Current Practice J. Yao
Expires: April 26, 2019 CNNIC
October 23, 2018
Special-Use Labels
draft-moonesamy-dnsop-special-use-label-registry-00
Abstract
This document describes what it means to say that a label is reserved
for special use, when reserving such a label is appropriate, and the
procedure for doing so. It establishes an IANA registry for such
special-use labels, and seeds it with entries for some of the already
established special labels.
Status of This Memo
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provisions of BCP 78 and BCP 79.
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This Internet-Draft will expire on April 26, 2019.
Copyright Notice
Copyright (c) 2018 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
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include Simplified BSD License text as described in Section 4.e of
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the Trust Legal Provisions and are provided without warranty as
described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Security Considerations . . . . . . . . . . . . . . . . . . . 2
3. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 2
3.1. Registration Procedures . . . . . . . . . . . . . . . . . 3
4. References . . . . . . . . . . . . . . . . . . . . . . . . . 3
4.1. Normative References . . . . . . . . . . . . . . . . . . 3
4.2. Informative References . . . . . . . . . . . . . . . . . 3
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 4
1. Introduction
The Domain Name System (DNS) rules for an Internet host name are
specified in [RFC0952] [RFC0952] and [RFC1123] [RFC1123]. Underscore
scoping [ID.draft-ietf-dnsop-attrleaf] [ID.draft-ietf-dnsop-attrleaf]
was introduced as an alternative to circumvent the deployment issues
of using a new RR type [RFC1034] [RFC1034]. Some applications, e.g.
web browsers, do not consider those underscore names as valid they do
not adhere to the rules for a host name [RFC1123]. This document
defines a registry to reserve special-use labels for cases where such
labels are needed as a workaround.
2. Security Considerations
A wildcard such as *.example.com could match a host name where a
special-use label is prepended to the domain name.
3. IANA Considerations
The DNS Special-Use Label registry entries consist of two fields:
Label, RR type, and Reference. The Label has to conform to DNS rules
for a label as defined in [RFC1034]. The initial assignment is as
follows:
+---------------------------------------+---------+------------+
| Label | RR Type | Reference |
+---------------------------------------+---------+------------+
| root-key-sentinel-is-ta-<key-tag> | A | [KSK-roll] |
| root-key-sentinel-is-ta-<key-tag> | AAAA | [KSK-roll] |
| root-key-sentinel-not-ta-<key-tag> | A | [KSK-roll] |
| root-key-sentinel-not-ta-<key-tag> | AAAA | [KSK-roll] |
+---------------------------------------+---------+------------+
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3.1. Registration Procedures
The registration policy for this registry is "IETF Review" [RFC8126]
[RFC8126]. The registrant of the label should provide the following
information:
o Label
o RR Type
o Reference
4. References
4.1. Normative References
[RFC0952] Harrenstien, K., Stahl, M., and E. Feinler, "DoD Internet
host table specification", RFC 952, DOI 10.17487/RFC0952,
October 1985, <https://www.rfc-editor.org/info/rfc952>.
[RFC1034] Mockapetris, P., "Domain names - concepts and facilities",
STD 13, RFC 1034, DOI 10.17487/RFC1034, November 1987,
<https://www.rfc-editor.org/info/rfc1034>.
[RFC1123] Braden, R., Ed., "Requirements for Internet Hosts -
Application and Support", STD 3, RFC 1123,
DOI 10.17487/RFC1123, October 1989,
<https://www.rfc-editor.org/info/rfc1123>.
[RFC8126] Cotton, M., Leiba, B., and T. Narten, "Guidelines for
Writing an IANA Considerations Section in RFCs", BCP 26,
RFC 8126, DOI 10.17487/RFC8126, June 2017,
<https://www.rfc-editor.org/info/rfc8126>.
4.2. Informative References
[ID.draft-ietf-dnsop-attrleaf]
Crocker, D., "ID.draft-ietf-dnsop-attrleaf", draft-ietf-
dnsop-attrleaf-14 (work in progress), October 2018.
[KSK-roll]
Huston, G., Damas, J., and W. Kumari, "A Root Key Trust
Anchor Sentinel for DNSSEC", draft-ietf-dnsop-kskroll-
sentinel-17 (work in progress), July 2018.
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Authors' Addresses
S. Moonesamy
76, Ylang Ylang Avenue
Quatres Bornes
Mauritius
Email: sm+ietf@elandsys.com
Jiankang Yao
CNNIC
4 South 4th Street, Zhongguancun, Haidian District
Beijing, Beijing 100190
China
Phone: +86 10 5881 3007
Email: yaojk@cnnic.cn
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