RE: Protocol Action: 'Reserved IPv6 Interface Identifiers' to Proposed Standard

["Dunn, Jeffrey H." <jdunn at mitre.org>]

Colleagues,

I have a question about the following language in section 2.0:

"For all unicast addresses, except those that start with the binary
value 000, Interface IDs are required to be 64 bits long and to be
constructed in Modified EUI-64 format. "

Although I do not see a MUST in this sentence, it appears that the
proposed standard is mandating that all interface IDs be 64-bits long.
This is not a requirement in several RFCs listed below. As a result, I
believe that this requirement should be stricken from the document.

RFC 2460, 5095
RFC 2463, 4443, 4884
RFC 2461, 3971, 4861
RFC 2462, 4862, 4941
RFC 3315, 3633, 3736, 4361
RFC 1981
RFC 2526, 3879, 4007, 4291
RFC 2671, 3596, 3986
RFC 3493, 3542, 3678, 4584, 5014
RFC 2740, 4552
RFC 1772, 2545, 4271, 4760
RFC 3948, 4301, 4302, 4303, 4308, 4809
RFC 4306, 4307, 4945
RFC 4213
RFC 2573, 2784, 4891
RFC 4798
RFC 3411, 3412, 3413, 3414
RFC 3289, 4022, 4087, 4113, 4292, 4293, 4295, 4807
RFC 3810, 4604
RFC 4601, 4609
RFC 2474, 2475, 2597, 2983, 3086, 3140, 3168, 3246, 3247, 3260, 3494
RFC 5072

Best Regards, 
  
Jeffrey Dunn 
Info Systems Eng., Lead 
MITRE Corporation.
(301) 448-6965 (mobile)

-----Original Message-----
From: ipv6-bounces at ietf.org [mailto:ipv6-bounces at ietf.org] On Behalf Of
The IESG
Sent: Friday, December 12, 2008 12:54 PM
To: IETF-Announce
Cc: 6man chair; Internet Architecture Board; 6man mailing list; RFC
Editor
Subject: Protocol Action: 'Reserved IPv6 Interface Identifiers' to
Proposed Standard 

The IESG has approved the following document:

- 'Reserved IPv6 Interface Identifiers '
   <draft-ietf-6man-reserved-iids-03.txt> as a Proposed Standard

This document is the product of the IPv6 Maintenance Working Group. 

The IESG contact persons are Jari Arkko and Mark Townsley.

A URL of this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-6man-reserved-iids-03.tx
t

Technical Summary

  Interface Identifiers in IPv6 unicast addresses are used
  to identify interfaces on a link.  They are required to be
  unique within a subnet.  Several RFCs have specified
  interface identifiers or identifier ranges that have a
  special meaning attached to them.  An IPv6 node
  autoconfiguring an interface identifier in these ranges
  will encounter unexpected consequences.  Since there is no
  centralized repository for such reserved identifiers, this
  document aims to create one.

Working Group Summary

  The 6MAN working group has done extensive reviews of this 
  document and it reflects the consensus of the working group.

Document Quality

  This document has been reviewed by numerous members of the
  ipv6 at ietf.org mailing list and by the 6MAN WG chairs.
     
Personnel

  Brian Haberman is the Document Shepherd, and Jari Arkko is
  the responsible Area Director.

RFC Editor Note

  Make this change in Appendix A:

  OLD:
  The following RFCs that generate interface identifiers need to be
  updated if they wish to avoid conflicts with the reserved interface
  identifier ranges.
  NEW:
  Implementations of the following RFCs need to be aware of the 
  reserved interface identifier ranges when they allocate new
  addresses. Future revisions of these RFCs should ensure that
  this is either already sufficiently clear or that the text
  is amended to take this into account.

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