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[6lo] Shipping RPL Unaware Leaves

"Pascal Thubert (pthubert)" <pthubert@cisco.com> Wed, 11 March 2020 08:25 UTC

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From: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
To: "6lo@ietf.org" <6lo@ietf.org>, Routing Over Low power and Lossy networks <roll@ietf.org>
CC: "suresh@kaloom.com" <suresh@kaloom.com>, Alvaro Retana <aretana.ietf@gmail.com>, Rahul Jadhav <nyrahul@outlook.com>
Thread-Topic: Shipping RPL Unaware Leaves
Thread-Index: AdX3fJ5pUtv4terQQmaCk9uJXDOjTQ==
Date: Wed, 11 Mar 2020 08:25:11 +0000
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Subject: [6lo] Shipping RPL Unaware Leaves
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Dear all :

As you may know, draft-ietf-roll-unaware-leaves is blocking the whole cluster C130 https://www.rfc-editor.org/cluster_info.php?cid=C310 and we want to ship it now (WG milestone: Mar 2020 - Initial submission). The issue we have with it is the fact that we allow encapsulate the ARO status in a RPL status and we need bits to signal that.

To free the necessary bits the proposal on the table is to reduce the possible values for the ARO status to 0-63.
This can be done by a simple IANA action that can be taken from draft-ietf-roll-unaware-leaves but we wanted to ensure that both ROLL and 6lo agree with the proposal:


12.1.  Resizing the ARO Status values

   IANA is requested to modify the Address Registration Option Status
   Values Registry as follows: The unassigned values range is reduced
   from 11-255 to 11-63.


NB: this will free 2 bits in the Extended Address Registration Option and the Extended Duplicate Address Message, could become handy in the future.

Is there an issue with this that we are missing?

Pascal

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