Re-,

I’m neutral on that one as the IANA registry is authoritative here. Leave it to 
you and Éric to decide when a tag on 8505 is suitable.

Thank you.

Cheers,
Med

De : Adnan Rashid <[email protected]>
Envoyé : mercredi 11 juin 2025 15:05
À : BOUCADAIR Mohamed INNOV/NET <[email protected]>
Cc : Pascal Thubert <[email protected]>; Eric Vyncke (evyncke) 
<[email protected]>; The IESG <[email protected]>; 
[email protected]; [email protected]; [email protected]; 
[email protected]
Objet : Re: [6lo] Mohamed Boucadair's Discuss on 
draft-ietf-6lo-updating-rfc-8928-04: (with DISCUSS and COMMENT)


By adding this table, I would like to add the following line


This table also updates the Section 
9.2<https://datatracker.ietf.org/doc/html/rfc8505#section-9.2>.  "Address 
Registration Option I-Field" in RFC8505.



Because this table is missing in RFC8505.



What do you think?



On Wed, Jun 11, 2025 at 2:22 PM 
<[email protected]<mailto:[email protected]>> wrote:
Hi Adnan,

Thanks for implementing the changes. Please find below two comments:

# You may consider rewording the abstract as follows (fix some nits, be 
self-contained, etc.):

OLD:
        This document updates RFC 8928 by changing the position for the
        C-flag in the Extended Address Registration Option (EARO) and
        registering it with IANA.  It also requests IANA to add a 2-bit
        integer for the I-field in the "Address Registration Option Flags"
        registry under ICMPv6 Parameters, as defined in RFC 8505.

NEW:
        This document updates “Address-Protected Neighbor Discovery
        for Low-Power and Lossy Networks” (RFC 8928) by changing the position 
of the
        C-flag in the Extended Address Registration Option (EARO) and
        registering it with IANA. The document also registers the I-Field, 
initially defined in
        “Registration Extensions for IPv6 over Low-Power Wireless Personal Area 
Network
        (6LoWPAN) Neighbor Discovery” (RFC 8505), in the "Address Registration 
Option Flags"
         registry under the “ICMPv6 Parameters” registry group.

# Please add this table to Section 6.2:

NEW:
   +-------------+--------------+------------+
   |  Bit Number | Description  | Reference  |
   +-------------+--------------+------------+
   |     4-5     | I-Field      | [RFC8505]  |
  +-------------+--------------+------------+
            Table 2: I-Field ARO Fags
You may also indicate that the values taken by the I-Field are defined in 
https://www.iana.org/assignments/icmpv6-parameters/icmpv6-parameters.xhtml#icmpv6-adress-registration-option-flags.

Cheers,
Med

De : Adnan Rashid <[email protected]<mailto:[email protected]>>
Envoyé : mercredi 11 juin 2025 14:02
À : BOUCADAIR Mohamed INNOV/NET 
<[email protected]<mailto:[email protected]>>
Cc : Pascal Thubert 
<[email protected]<mailto:[email protected]>>; Eric Vyncke 
(evyncke) <[email protected]<mailto:[email protected]>>; The IESG 
<[email protected]<mailto:[email protected]>>; 
[email protected]<mailto:[email protected]>;
 [email protected]<mailto:[email protected]>; 
[email protected]<mailto:[email protected]>; 
[email protected]<mailto:[email protected]>
Objet : Re: [6lo] Mohamed Boucadair's Discuss on 
draft-ietf-6lo-updating-rfc-8928-04: (with DISCUSS and COMMENT)

CAUTION : This email originated outside the company. Do not click on any links 
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Hi Med,

Thanks for acting as a reliable protocol. I like it. 😁

I added the Operational Consideration section as you suggested.
Could you please see all the changes advised by the IESG? See the attached file

Four things I changed mainly,

1- Draft name changed
2- Abstract changed
3- Added OP Consideration section
4- Added I-Field subsection in IANA Section

If you agree then I will push the updated draft on the IETF.


On Tue, Jun 10, 2025 at 7:25 PM 
<[email protected]<mailto:[email protected]>> wrote:
Hi Adnan,

Thanks for the follow-up.

Please see inline.

Cheers,
Med

De : Adnan Rashid <[email protected]<mailto:[email protected]>>
Envoyé : mardi 10 juin 2025 18:31
À : BOUCADAIR Mohamed INNOV/NET 
<[email protected]<mailto:[email protected]>>; Pascal 
Thubert <[email protected]<mailto:[email protected]>>; Eric 
Vyncke (evyncke) <[email protected]<mailto:[email protected]>>
Cc : The IESG <[email protected]<mailto:[email protected]>>; 
[email protected]<mailto:[email protected]>;
 [email protected]<mailto:[email protected]>; 
[email protected]<mailto:[email protected]>; 
[email protected]<mailto:[email protected]>
Objet : Re: [6lo] Mohamed Boucadair's Discuss on 
draft-ietf-6lo-updating-rfc-8928-04: (with DISCUSS and COMMENT)


Dear Mohamed,

Thanks for the comments and your time. As we already discussed in the IESG 
meeting  My response is inline

# 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?

You are right. We wrote some text in the IANA Consideration section.
[Med] ACK. Thanks.



----------------------------------------------------------------------
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.

<mailto:[email protected]>
Since there is no known implementation there shouldn’t be any operational 
impact.
[Med] Please say so explicitly in that section. For example, you can add the 
following:

NEW:

X. Operational Considerations

The updates introduced in this document are not backward compatible. However, 
given that
there are no known implementations or deployments of [RFC 8928], this document 
do not
require any transition plan.


# nits

## Title

OLD: Fixing the C-Flag in EARO
NEW: Fixing the C-Flag in Extended Address Registration Option (EARO)

Done. But if the I-field needs to be fixed in the current document then we will 
revise it and let you know.
[Med] Agree.


## Abstract

### I would delete “(AP-ND)” to be consistent with the title used in RFC 8928
Done
[Med] ACK

###

OLD: updates .. by updating the position

NEW: OLD: updates .. by changing the position
Done
[Med] ACK

## Section 3

OLD: Figure 1 below
NEW: Figure 1
Done
[Med] ACK

OLD: Figure 2 below
NEW: Figure 2
Done
[Med] ACK

## 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.
Done.
[Med] ACK




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