Network Working Group J. Abley
Internet-Draft TekSavvy Solutions, Inc.
Intended status: Experimental March 18, 2013
Expires: September 19, 2013
Resource Records for EUI-48 and EUI-64 Addresses in the DNS
draft-jabley-dnsext-eui48-eui64-rrtypes-00
Abstract
EUI-48 and 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 September 19, 2013.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Presentation Format Considerations . . . . . . . . . . . . . . 5
4. The EUI48 Resource Record . . . . . . . . . . . . . . . . . . 6
4.1. EUI48 RDATA Wire Format . . . . . . . . . . . . . . . . . 6
4.2. EUI48 RR Presentation Format . . . . . . . . . . . . . . . 6
5. The EUI64 Resource Record . . . . . . . . . . . . . . . . . . 7
5.1. EUI64 RDATA Wire Format . . . . . . . . . . . . . . . . . 7
5.2. EUI64 RR Presentation Format . . . . . . . . . . . . . . . 7
6. Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 9
8. Security Considerations . . . . . . . . . . . . . . . . . . . 10
9. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 11
10. Normative References . . . . . . . . . . . . . . . . . . . . . 12
Appendix A. Editorial Notes . . . . . . . . . . . . . . . . . . . 13
A.1. RRType Parameter Allocation Template . . . . . . . . . . . 13
A.2. Change History . . . . . . . . . . . . . . . . . . . . . . 14
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . . 15
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1. Introduction
The Domain Name System (DNS) is described in [RFC1034] and [RFC1035].
This base specification defines many Resource Record Types (RRTypes),
and subsequent specifications have defined others. Each defined
RRType provides a means of encoding particular data in the DNS.
EUI-48 [EUI48] and 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 Resource Record Types (RRTypes), 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. Presentation Format Considerations
Various representations of EUI-48 and EUI-64 addresses are used in
common implementations, depending on application and vendor
preference. For example, the EUI-48 address 7cd1c3e8102f might
reasonably be represented as any of the following:
o 7cd1c3e8102f
o 7c:d1:c3:e8:10:2f
o 7c-d1-c3-e8-10-2f
o 7cd1.c3e8.102f
There is no canonical representation defined by the IEEE.
The use of a single representation for use in the DNS promotes ease
of implementation and information retrieval, and this document
specifies (see Section 4.2, Section 5.2) that the second
representation on this list be used, that of two-digit hexadecimal
numbers separated by colons. The digits A through F may be
represented in either upper or lower case.
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4. The EUI48 Resource Record
The EUI48 RR is used to store EUI-48 addresses in the DNS.
The Type value for the EUI48 RRType is XXTBA1.
The EUI48 RR is class-independent.
The EUI48 RR has no special TTL requirements.
4.1. 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.
1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 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 |
| +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
4.2. EUI48 RR Presentation Format
The Address field MUST be represented as six two-digit hexadecimal
numbers separated by colons. The hexadecimal digits "A" through "F"
MAY be represented in either upper or lower case.
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5. The EUI64 Resource Record
The EUI64 RR is used to store EUI-64 addresses in the DNS.
The Type value for the EUI64 RR is XXTBA2.
The EUI64 RR is class-independent.
The EUI64 RR has no special TTL requirements.
5.1. EUI64 RDATA Wire Format
The RDATA for an EUI48 RR consists of a single, 8-octet Address
field, encoded in network (big-endian) order.
1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 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 |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
5.2. EUI64 RR Presentation Format
The Address field MUST be represented as eight two-digit hexadecimal
numbers separated by colons. The hexadecimal digits "A" through "F"
may be represented in either upper or lower case.
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6. Examples
The following EUI48 RR stores the EUI-48 address 7c:d1:c3:e8:10:2f.
host.example. 86400 IN EUI48 7c:d1:c3:e8:10:2f
The following EUI64 RR stores the EUI-64 address 7c:d1:c3:ff:fe:e8:
10:2f.
host.example. 86400 IN EUI64 7c:d1:c3:ff:fe:e8:10:2f
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7. IANA Considerations
This document directs the IANA to assign two entries in the "Resource
Record (RR) TYPEs" subregistry as follows:
+-------+--------+-------------------+---------------+
| Type | Value | Meaning | Reference |
+-------+--------+-------------------+---------------+
| EUI48 | XXTBA1 | an EUI-48 address | this document |
| | | | |
| EUI64 | XXTBA2 | an EUI-64 address | this document |
+-------+--------+-------------------+---------------+
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8. Security Considerations
The specification presented in this document presents no additional
threat to the Internet.
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9. Acknowledgements
Your name here, etc.
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10. 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: joe.abley@icann.org
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.
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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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