Re: [6lo] recoverable fragments: use page 1

Michael Richardson <mcr+ietf@sandelman.ca> Tue, 21 May 2019 13:49 UTC

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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
cc: "6lo@ietf.org" <6lo@ietf.org>, Laurent Toutain <laurent.toutain@imt-atlantique.fr>
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Date: Tue, 21 May 2019 09:49:31 -0400
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Subject: Re: [6lo] recoverable fragments: use page 1
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Pascal Thubert (pthubert) <pthubert@cisco.com> wrote:
    > During the review by Laurent, a question came up on whether we could use page
    > 1 for fragments.

This implies to me that we'd allocate code points for fragments from page 1.

    > At the moment the fragment is always before the 6lo routing
    > header so there is no point. But say that we source route the fragments end
    > to end with a 6loRH, e.g., for projected DAO. Then supporting page 1 as well
    > would save a page switch.

What exactly does it mean to support page 1?
Duplicate code points?
Starting in page 1 mode for fragments?
Allocating all fragment code points from page 1?

Maybe we should have a document about source routing fragments end to end for
projected DAO, and then we can see the full picture.

--
Michael Richardson <mcr+IETF@sandelman.ca>, Sandelman Software Works
 -= IPv6 IoT consulting =-