[RTG-DIR]Re: Rtgdir last call review of draft-ietf-pim-3810bis-10

[[e-mail]]

Hi Brian, 

Please see inline. 

Cheers,
Med

> -----Message d'origine-----
> De : Brian Haberman <[e-mail]>
> Envoyé : mardi 4 juin 2024 15:42
> À : BOUCADAIR Mohamed INNOV/NET <[e-mail]>;
> [e-mail]
> Cc : [e-mail]; [e-mail];
> [e-mail]
> Objet : [RTG-DIR]Re: Rtgdir last call review of draft-ietf-pim-
> 3810bis-10
> 
> Hi Med,
> 
> On 6/3/24 10:36 AM, [e-mail] wrote:
> 
> >>> ## Ops considerations
> >>>
> >>> How to determine whether a received MLDv2 message is to be
> >> interpreted
> >>> following the rules in the bis or 3810 (that is, the meaning
> is
> >>> actually associated or not with what used to be a reserved
> >> bit)?
> >>
> >> This document makes 3810 obsolete, so 3810bis is normative.
> >
> > [Med] Not sure what you meant by "3810bis is normative" given
> that the document under discussion is the 3810bis.
> >
> 
> Perhaps I am interpreting your comment incorrectly...
> 
> A system that conforms to this document (3810bis) will make
> determinations on a received MLDv2 message based on the rules in
> this document.

[Med] Agree.

> 
> Is there something you see in 3810bis that is incompatible with
> 3810?
> 

[Med] I had in mind a legacy which does not follow, e.g., this part from 3810:  

==
5.1.4.  Reserved

   Initialized to zero by the sender; ignored by receivers.
==

The 3810bis receiver will interpret the flags. This may or may not lead to misbehaviors. 

May be this falls under "fixing broken implems" is not the business of the bis. 

Thanks

> Regards,
> Brian
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