Re: draft-ietf-ipv6-ra-flags-option edits

Jari Arkko <jari.arkko@piuha.net> Mon, 17 September 2007 16:23 UTC

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Date: Mon, 17 Sep 2007 19:23:28 +0300
From: Jari Arkko <jari.arkko@piuha.net>
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To: Brian Haberman <brian@innovationslab.net>
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Cc: Bob Hinden <bob.hinden@nokia.com>, IPv6 WG Mailing List <ipv6@ietf.org>
Subject: Re: draft-ietf-ipv6-ra-flags-option edits
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I did not see any complaints, so given that Brian's new
version is in the directories I will proceed with the
approval.

Thanks,

Jari

Brian Haberman kirjoitti:
> All,
>      The IESG reviewed the RA flags option draft and provided several
> comments.  In order to address those comments, I proposed the
> following OLD/NEW edits to the document.  I will submit a revised
> version of the document to the ID editor soon.  If you have issues
> with the proposed changes, please let me know quickly.
>
>
>
> OLD:
>       Length = 1; The length MUST be checked when processing the option
>       in order to allow for future expansion of this option if the need
>       arises.
>
> NEW:
>       Length - The length MUST be checked when processing the option
>       in order to allow for future expansion of this option.  An
>       implementation of this specification MUST set the Length to 1,
>       MUST ignore any unrecognized data, and MUST be able to recognize
>       the specified length in order to skip over unrecognized bits.
>
>
> OLD:
>    During the construction/transmission, this option:
>
>    o  MUST only occur in Router Advertisement messages
>
>    o  MUST be the first option immediately following the Router
>       Advertisement message header
>
>    o  MUST only occur once in the Router Advertisement message.
>
> NEW:
>    During the construction/transmission, this option:
>
>    o  MUST only occur in Router Advertisement messages
>
>    o  MUST occur prior to any additional options associated with any
>       flags set in this option
>
>    o  MUST only occur once in the Router Advertisement message
>
>    o  MUST NOT be added to a Router Advertisement message if no flags
>       in the option are set
>
>    o  MUST have all unused flags set to zero.
>
>
> OLD:
>    Upon reception, a receiver processing NDP messages containing this
>    option:
>
>    o  MUST ignore the option if it occurs in a message other than a
>       Router Advertisement
>
>    o  MUST ignore the option if it is not the first option in the Router
>       Advertisement
>
>    o  MUST ignore all instances of the option except the first one
>       encountered in the Router Advertisement message
>
> NEW:
>    Upon reception, a receiver processing NDP messages containing this
>    option:
>
>    o  MUST ignore the option if it occurs in a message other than a
>       Router Advertisement
>
>    o  MUST ignore all instances of the option except the first one
>       encountered in the Router Advertisement message
>
>    o  MUST ignore the option if the Length is less than 1
>
>    o  MUST ignore any unknown flag bits.
>
>
> OLD:
>    The bit fields within the option are numbered from left to right from
>    8 to 55 and follow the numbering of the flag bits in the RA option
>    described in Figure 1.  Flag bits 0 to 7 are found in the Router
>    Advertisement message header defined in [1]
>
> NEW:
>    The bit fields within the option are numbered from left to right from
>    8 to 55 (starting at bit offset 16 in the option) and follow the
>    numbering of the flag bits in the RA option described in Figure 1.
>    Flag bits 0 to 7 are found in the Router Advertisement message header
>    defined in [1]
>
>
> OLD:
>    The assignment of new RA flags in the RA option header and for the
>    bits defined in the RA extension option defined in this document
>    require standards action or IESG approval.
>
>
> NEW:
>    The assignment of new RA flags in the RA option header and for the
>    bits defined in the RA extension option defined in this document
>    require standards action or IESG approval [RFC2434].
>
>
> Regards,
> Brian
>
>
>


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