[pim] rfc1112 open point - Re: I-D Action: draft-ietf-pim- rfc1112bis-08.txt

Dear PIM-WG

Great feedback from early review of directorates. Still missing out TSV review,
probably a congestion control problem ;-)

I hope that all the points raised by directorate reviewers are resolved well in -08.

Summary of those points in the changelog.

I did ask for one slot @IETF125 for one additional change i did add which extends
the scope of the document to IP multicast routers, because having worked
in vendors of such type of devices i very much love to see the -bis to apply
to IP multicast routers (just the host stack part of course), but it's
kinda difficult. So that's what i would love to get feedback on, and if
not liked i can remove / strip it accordingly.

This is the new main portion new text:

8.  ROUTING MULTICAST IP DATAGRAMS
   
   IP multicast routers are recommended to support the IP host stack
   extensions as specified in this document especially to support
   applications using the IP Service Interface Section 5 to send/receive
   IP multicast packets including those commonly required for IPv6
   ([RFC4861]).
     
   Given how IP multicast routers behavior and their behavior for IGMP/
   MLD differs from non IP multicast routers, Local Network Module layer
   and IGMP/MLD protocol requirements MAY be optimized/changed from what
   is required by this document.  See Appendix A.4 for more details/  
   examples.

And there is a rewritten A.4 explaining possible optimization.

I know this is ambitios, but all IP multicast routers i know have an IP
multicast host stack, but we have no RFC specifying what it should be,
and RFC1112 would just be potentiallt a bit tooo constrained to make
all IP multicast routers happy. So i wanted to take a stab at the problem.

Hopefully we can have a good discuss a out this @IETF125 - even if with
lots of remote attendants ;-)

Cheers
    Toerless

P.S.: I will do another textural editorial run before WG meeting, sorry,
ran out of time now...

On Thu, Feb 26, 2026 at 06:39:16PM -0800, [email protected] wrote:
> Internet-Draft draft-ietf-pim-rfc1112bis-08.txt is now available. It is a work
> item of the Protocols for IP Multicast (PIM) WG of the IETF.
> 
>    Title:   Host Extensions for IP Multicasting and "Any Source Multicasting" (ASM) IP service
>    Authors: Toerless Eckert
>             Stephen E. Deering
>    Name:    draft-ietf-pim-rfc1112bis-08.txt
>    Pages:   54
>    Dates:   2026-02-26
> 
> Abstract:
> 
>    This memo specifies the extensions required of a host implementation
>    of the Internet Protocol (IP) to support IP multicast with the IP
>    service interface "Any Source Multicast" (ASM).  This specification
>    applies to both versions 4 and 6 of the Internet Protocol.
>    Distribution of this memo is unlimited.
> 
>    This document replaces RFC1112 for everything but its specification
>    of the IGMP version 1 protocol.
> 
> The IETF datatracker status page for this Internet-Draft is:
> https://datatracker.ietf.org/doc/draft-ietf-pim-rfc1112bis/
> 
> There is also an HTMLized version available at:
> https://datatracker.ietf.org/doc/html/draft-ietf-pim-rfc1112bis-08
> 
> A diff from the previous version is available at:
> https://author-tools.ietf.org/iddiff?url2=draft-ietf-pim-rfc1112bis-08
> 
> Internet-Drafts are also available by rsync at:
> rsync.ietf.org::internet-drafts
> 
> 

-- 
---
[email protected]

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