Network Working Group J. Abley
Internet-Draft TekSavvy Solutions, Inc.
Intended status: Standards Track April 2, 2013
Expires: October 4, 2013
Resource Records for EUI-48 and EUI-64 Addresses in the DNS
draft-jabley-dnsext-eui48-eui64-rrtypes-02
Abstract
48-bit Extended Unique Identifiers (EUI-48) and 64-bit Extended
Unique Identifiers (EUI-64) are address formats specified by the IEEE
for use in various layer-2 networks, e.g. ethernet.
This document defines two new DNS resource record types, EUI48 and
EUI64, for encoding ethernet addresses in the DNS.
Status of this Memo
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This Internet-Draft will expire on October 4, 2013.
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described in the Simplified BSD License.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. The EUI48 Resource Record . . . . . . . . . . . . . . . . . . 5
3.1. EUI48 RDATA Wire Format . . . . . . . . . . . . . . . . . 5
3.2. EUI48 RR Presentation Format . . . . . . . . . . . . . . . 5
4. The EUI64 Resource Record . . . . . . . . . . . . . . . . . . 6
4.1. EUI64 RDATA Wire Format . . . . . . . . . . . . . . . . . 6
4.2. EUI64 RR Presentation Format . . . . . . . . . . . . . . . 6
5. Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 8
7. Security Considerations . . . . . . . . . . . . . . . . . . . 9
8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 10
9. Normative References . . . . . . . . . . . . . . . . . . . . . 11
Appendix A. Editorial Notes . . . . . . . . . . . . . . . . . . . 12
A.1. RRType Parameter Allocation Template . . . . . . . . . . . 12
A.2. Change History . . . . . . . . . . . . . . . . . . . . . . 13
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . . 14
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1. Introduction
The Domain Name System (DNS) is described in [RFC1034] and [RFC1035].
This base specification defines many Resource Record (RR) Types, and
subsequent specifications have defined others. Each defined RRType
provides a means of encoding particular data in the DNS.
48-bit Extended Unique Identifiers (EUI-48) [EUI48] and 64-bit
Extended Unique Identifiers (EUI-64) [EUI64] are address formats
specified by the IEEE for use in various layer-2 networks, e.g.
ethernet.
This document defines two new RR Types, EUI48 and EUI64 for encoding
EUI-48 and EUI-64 addresses in the DNS.
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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 [RFC2119].
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3. The EUI48 Resource Record
The EUI48 RR is used to store a single EUI-48 address in the DNS.
The Type value for the EUI48 RRType is 108 (decimal).
The EUI48 RR is class-independent.
The EUI48 RR has no special Time-to-Live (TTL) requirements.
3.1. EUI48 RDATA Wire Format
The RDATA for an EUI48 RR consists of a single, 6-octet EUI48-Address
field, encoded in network (big-endian) order.
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| EUI48-Address |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
3.2. EUI48 RR Presentation Format
The Address field MUST be represented as six two-digit hexadecimal
numbers separated by hyphens. The hexadecimal digits "A" through "F"
MAY be represented in either upper or lower case.
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4. The EUI64 Resource Record
The EUI64 RR is used to store a single EUI-64 address in the DNS.
The Type value for the EUI64 RR is 109 (decimal).
The EUI64 RR is class-independent.
The EUI64 RR has no special TTL requirements.
4.1. EUI64 RDATA Wire Format
The RDATA for an EUI48 RR consists of a single, 8-octet Address
field, encoded in network (big-endian) order.
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| EUI-64 Address |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
4.2. EUI64 RR Presentation Format
The Address field MUST be represented as eight two-digit hexadecimal
numbers separated by hyphens. The hexadecimal digits "A" through "F"
MAY be represented in either upper or lower case.
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5. Examples
The following EUI48 RR stores the EUI-48 unicast address 00-00-5e-90-
01-2a.
host.example. 86400 IN EUI48 00-00-5e-90-01-2a
The following EUI64 RR stores the EUI-64 address 00-00-5e-ef-00-00-
00-2a.
host.example. 86400 IN EUI64 00-00-5e-ef-00-00-00-2a
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6. IANA Considerations
IANA has assigned the RRType value 108 (decimal) for EUI48 and 109
(decimal) for EUI64. This document directs the IANA to confirm that
the corresponding entries in the "Resource Record (RR) TYPEs"
subregistry match the following data:
+-------+-------+-------------------+---------------+
| Type | Value | Meaning | Reference |
+-------+-------+-------------------+---------------+
| EUI48 | 108 | an EUI-48 address | this document |
| | | | |
| EUI64 | 109 | an EUI-64 address | this document |
+-------+-------+-------------------+---------------+
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7. Security Considerations
The specification presented in this document presents no additional
threat to the Internet.
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8. Acknowledgements
The author acknowledges the contributions of Olafur Gudmundsson, Mark
Smith, Andrew Sullivan and Roy Arends.
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9. Normative References
[EUI48] IEEE, "Guidelines for use of a 48-bit Extended Unique
Identifier (EUI-48)".
[EUI64] IEEE, "Guidelines for use of a 64-bit Extended Unique
Identifier (EUI-64)".
[RFC1034] Mockapetris, P., "Domain names - concepts and facilities",
STD 13, RFC 1034, November 1987.
[RFC1035] Mockapetris, P., "Domain names - implementation and
specification", STD 13, RFC 1035, November 1987.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119, March 1997.
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Appendix A. Editorial Notes
This section (and sub-sections) to be removed prior to publication.
A.1. RRType Parameter Allocation Template
DNS RRTYPE PARAMETER ALLOCATION TEMPLATE
A. Submission Date: 2013-03-18
B.1 Submission Type: [X] New RRTYPE [ ] Modification to RRTYPE
B.2 Kind of RR: [X] Data RR [ ] Meta-RR
C. Contact Information for submitter (will be publicly posted):
Name: Joe Abley
Email Address: jabley@teksavvy.ca
International telephone number: +1 519 670 9327
Other contact handles:
D. Motivation for the new RRTYPE application.
The purpose of this RRTYPE application is to allow EUI-48
and EUI-64 addresses to be stored in the DNS. EUI-48
addresses are those used, for example, in ethernet.
E. Description of the proposed RR type.
See draft-jabley-dnsext-eui48-eui64-rrtypes for a full
description.
F. What existing RRTYPE or RRTYPEs come closest to filling that
need and why are they unsatisfactory?
The TXT record can be used to store arbitrary, unstructured
data in the DNS and hence could be used to store EUI-48 and
EUI-64 addresses. This approach is unsatisfactory for the
usual reasons, i.e. there is no opportunity for validating
data before it is stored, and typographical errors must
consequently be detected after data retrieval.
G. What mnemonic is requested for the new RRTYPE (optional)?
EUI48 for EUI-48 addresses; EUI64 for EUI-64 addresses.
H. Does the requested RRTYPE make use of any existing IANA
registry or require the creation of a new IANA sub-registry
in DNS Parameters? If so, please indicate which registry is
to be used or created. If a new sub-registry is needed, specify
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the allocation policy for it and its initial contents. Also
include what the modification procedures will be.
No.
I. Does the proposal require/expect any changes in DNS
servers/resolvers that prevent the new type from being processed
as an unknown RRTYPE (see [RFC3597])?
No.
J. Comments:
See draft-jabley-dnsext-eui48-eui64-rrtypes for a complete
specification.
A.2. Change History
00 Initial idea, circulated for the purposes of entertainment.
01 Presentation format changed from colon-separated to hyphen-
separated, to better match conventional usage for big-endian
representations of EUI-48 and EUI-64 addresses. IEEE trademarks
acknowledged. Code-points assigned by expert review. Other minor
tweaks and fixes based on early review.
02 Example EUI64 presentation format in text corrected (colons ->
hyphens). Examples changed to use to-be-assigned addresses under
the IANA OUI.
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Author's Address
Joe Abley
TekSavvy Solutions, Inc.
470 Moore Street
London, ON N6C 2C2
Canada
Phone: +1 519 670 9327
Email: jabley@teksavvy.ca
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