I’d rather we ask IANA with this draft so we are clean…
Mes we owe you one! Remind me in Madrid :)

A bientôt;

Pascal

> Le 5 juin 2025 à 15:27, Eric Vyncke (evyncke) <[email protected]> a écrit :
> 
> 
> Med,
>  
> It seems that you are correct: the ‘Address Registration Option Flags’ 
> registry should have bits 4-5 reserved for the I-field per RFC 8505 section 
> 9.2.
>  
> So, the IANA consideration of this draft should indeed also update these bits 
> (or this could be done by IANA on its own ?)
>  
> -éric
>  
> From: Mohamed Boucadair via Datatracker <[email protected]>
> Date: Wednesday, 4 June 2025 at 14:05
> To: The IESG <[email protected]>
> Cc: [email protected] 
> <[email protected]>, [email protected] 
> <[email protected]>, [email protected] <[email protected]>, [email protected] 
> <[email protected]>
> Subject: Mohamed Boucadair's Discuss on draft-ietf-6lo-updating-rfc-8928-04: 
> (with DISCUSS and COMMENT)
> 
> Mohamed Boucadair has entered the following ballot position for
> draft-ietf-6lo-updating-rfc-8928-04: Discuss
> 
> When responding, please keep the subject line intact and reply to all
> email addresses included in the To and CC lines. (Feel free to cut this
> introductory paragraph, however.)
> 
> 
> Please refer to 
> https://www.ietf.org/about/groups/iesg/statements/handling-ballot-positions/
> for more information about how to handle DISCUSS and COMMENT positions.
> 
> 
> The document, along with other ballot positions, can be found here:
> https://datatracker.ietf.org/doc/draft-ietf-6lo-updating-rfc-8928/
> 
> 
> 
> ----------------------------------------------------------------------
> DISCUSS:
> ----------------------------------------------------------------------
> 
> Hi Pascal & Adnan,
> 
> Thanks for the effort put into this specification.
> 
> Thanks to Samier Barguil for the OPSDIR review and the authors for engaging 
> and
> converging with Samier.
> 
> # DISCUSS
> 
> ## I-Flag
> 
> CURRENT:
>      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>      |r|C| P | I |R|T|     TID       |     Registration Lifetime     |
>      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> 
> Seems I-flag was defined in Section 4.1 of RFC 8505 which has the following:
> 
> CURRENT:
>    I:          2-bit integer.  A value of 0 indicates that the Opaque
>                field carries an abstract index that is used to decide in
>                which routing topology the address is expected to be
>                injected.  In that case, the Opaque field is passed to a
>                routing process with the indication that it carries
>                topology information, and the value of 0 indicates
>                default.  All other values of "I" are reserved and
>                MUST NOT be used.
> 
>    R:          The Registering Node sets the R flag to request
>                reachability services for the Registered Address from a
>                Routing Registrar.
> 
>    T:          1-bit flag.  Set if the next octet is used as a TID.
> 
> While IANA section of RFC 8505 has the following:
> 
>    The initial contents of the registry are shown in Table 2.
> 
>                 +-------------+--------------+------------+
>                 |  ARO Status | Description  | Reference  |
>                 +-------------+--------------+------------+
>                 |     0-5     | Unassigned   |            |
>                 |             |              |            |
>                 |      6      | R Flag       | RFC 8505   |
>                 |             |              |            |
>                 |      7      | T Flag       | RFC 8505   |
>                 +-------------+--------------+------------+
> 
>               Table 2: New Address Registration Option Flags
> 
> I don’t see that flag in thee IANA registry. Maybe I'm looking in the wrong
> place.
> 
> Should that be fixed as well?
> 
> 
> ----------------------------------------------------------------------
> COMMENT:
> ----------------------------------------------------------------------
> 
> # OPS Implications
> 
> The introduction says:
> 
> CURRENT:
>    This specification updates [RFC8928] by repositioning the C-flag as
>    bit 1 of the EARO flags field, thereby preventing conflicts.
> 
> Are there known implementations/deployments? What are the implications of 
> this change?
> 
> Please consider adding those in an Operational considerations Section.
> 
> # nits
> 
> ## Title
> 
> OLD: Fixing the C-Flag in EARO
> NEW: Fixing the C-Flag in Extended Address Registration Option (EARO)
> 
> ## Abstract
> 
> ### I would delete “(AP-ND)” to be consistent with the title used in RFC 8928
> 
> ###
> 
> OLD: updates .. by updating the position
> 
> NEW: OLD: updates .. by changing the position
> 
> ## Section 3
> 
> OLD: Figure 1 below
> NEW: Figure 1
> 
> OLD: Figure 2 below
> NEW: Figure 2
> 
> ## Section 5.1
> 
> The IANA action is sufficient in its own, no need to be redundant. I would 
> delete the following:
> 
>    This specification updates the location of the C-flag introduced in
>    [RFC8928] to position it as bit 1 in the EARO flags field.
> 
> Cheers,
> Med
> 
> 
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