Hi,
On Feb 5, 2007, at 9:14 AM, Durand, Alain wrote:
I would like to ask what is the transition plan for "legacy" IPv6
hosts
that do not implement this extension before I could consider this
draft
a viable approach.
RFC2461, Section 4.2 says the following about new options:
Future versions of this protocol may define new option types.
Receivers MUST silently ignore any options they do not recognize
and continue processing the message.
Any legacy host that didn't support the new option also wouldn't know
how to support anything defined in the extension space. So I don't
think there is a problem with legacy hosts.
We have a number of bits that are currently defined that may be
questionable,
(the best example: O & M), so I would like to see some more
justification
why more bits are needed for the general RA case and maybe some
clean-up
of the current bits before we embark into defining a new space for
potentially questionable new cases.
The intent of the draft was to document in one place all of the
current bits and provide a way of creating new ones.
In my personal view, any discussion cleaning up the RA bits would
take a very long time (based on the time it took for the w.g. to
agree on the current text on the O&M bits), so I see very little
value in trying to clean up the bits. Further, back to your first
question, cleaning up the bits would create a significant operational
problem.
Bob
So, at this point, I do not support this draft.
- Alain.
-----Original Message-----
From: Brian Haberman [mailto:[EMAIL PROTECTED]
Sent: Friday, February 02, 2007 12:41 PM
To: ipv6@ietf.org
Subject: WG Request: Adopt draft-haberman-ipv6-ra-flags-option-00.txt
All,
This is a formal call to request IPv6 WG feedback on
adopting the below draft. The premise of the draft is to
expand the flags field that is quickly running out of bits.
Please provide your preference (positive or negative) on
having this document become an IPv6 WG document. Comments on
the contents are most welcome as well.
Regards,
Brian
-------- Original Message --------
Subject: I-D ACTION:draft-haberman-ipv6-ra-flags-option-00.txt
Date: Tue, 01 Aug 2006 15:50:01 -0400
From: [EMAIL PROTECTED]
Reply-To: [EMAIL PROTECTED]
To: i-d-announce@ietf.org
A New Internet-Draft is available from the on-line
Internet-Drafts directories.
Title : IPv6 Router Advertisement Flags Option
Author(s) : B. Haberman, R. Hinden
Filename : draft-haberman-ipv6-ra-flags-option-00.txt
Pages : 7
Date : 2006-8-1
The IPv6 Neighbor Discovery's Router Advertisement message
contains an 8-bit field reserved for single-bit flags.
Several protocols have reserved flags in this field and
others are preparing to reserve a sufficient number of flags
to exhaust the field. This document defines an option to the
Router Advertisement message that expands the available
number of flag bits available.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-haberman-ipv6-ra-fla
gs-option-00.txt
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