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RE: 6MAN WG Last Call:draft-ietf-6man-ipv6-subnet-model-00.txt

"Hemant Singh (shemant)" <shemant@cisco.com> Thu, 03 July 2008 21:35 UTC

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Subject: RE: 6MAN WG Last Call:draft-ietf-6man-ipv6-subnet-model-00.txt
Date: Thu, 03 Jul 2008 17:35:56 -0400
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From: "Hemant Singh (shemant)" <shemant@cisco.com>
To: Thomas Narten <narten@us.ibm.com>
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Cc: ipv6@ietf.org, Brian Haberman <brian@innovationslab.net>, Bob Hinden <bob.hinden@nokia.com>
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Thomas,

Will something like this work for you - we have replaced "change" with
"clarification".

[The source of an ND message is no longer used for on-link
determination, which is a clarification of bullet four of on-link
definition in Terminology section of [RFC4861].]

or 

[The source of an ND message is no longer used for on-link
determination, which is a clarification of on-link definition in
Terminology section of [RFC4861].]


I agree with you, no implementations have actually interpreted this
source address rule, but when folks like David notice the bug, folks
quote the definition of on-link in Terminology section of RFC4861. That
is why we thought of adding this line to our doc.

Thanks.

Hemant

-----Original Message-----
From: Thomas Narten [mailto:narten@us.ibm.com] 
Sent: Thursday, July 03, 2008 5:12 PM
To: Hemant Singh (shemant)
Cc: Brian Haberman; Bob Hinden; ipv6@ietf.org
Subject: Re: 6MAN WG Last Call:draft-ietf-6man-ipv6-subnet-model-00.txt


> Sorry, I forgot one item that Wes just reminded me of. Earlier in the 
> day I had emailed out our new text for bullet 2 that has this new
line:

> "The source of an ND message is no longer used for on-link 
> determination, which is a change from [RFC4861]."

I object, because I do not believe 4861 really says this (if you look
across the document in totality) or was widely interpreted to say this.

Until the recent notes from David Miles, I don't think anyone noticed
the bug. Certainly, I have seen no evidence that implementations
actually interpreted 4861 or its predecessors and actually did the wrong
thing when receiving an NS.

So, we can call certainly this a clarification, but I'd hesitate to call
it a change.

Thomas
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