I have reviewed the draft and support moving ahead with publishing this as an 
RFC.

The primary use case is well described in Section 3 of the draft. Note this is 
NOT, as some folks have mistakenly inferred from the draft title,  aimed at 
multicast RPF use cases.

As regards the evolving set of rules for flex-algo calculations, I think the 
current model of adding an appendix with the full list of updated rules is 
problematic.
We now have three documents which define rules:

RFC 9350
draft-ietf-lsr-flex-algo-bw-con
draft-ietf-lsr-igp-flex-algo-reverse-affinity

Each document is accurate based on the rules defined at the time of publication.
But as each document is published - with potentially more on the way - it 
becomes difficult to know which is the "latest".
Readers of one document might not be aware of the other documents.

Perhaps the authors of the two drafts above could consider introducing an IANA 
Registry which has the ordered list of rules (and appropriate references for 
each) so that there is one source of truth.
Each document would then simply specify the updates to the IANA registry.

   Les

> -----Original Message-----
> From: Acee Lindem <[email protected]>
> Sent: Thursday, January 16, 2025 11:03 AM
> To: lsr <[email protected]>
> Cc: [email protected]
> Subject: [Lsr] Working Group Last Call of "IGP Flexible Algorithms Reverse
> Affinity Constraint" - draft-ietf-lsr-igp-flex-algo-reverse-affinity-03
> 
> LSR WG,
> 
> 
> This email begins a 3 week WG Last Call for the following draft: "IGP Flexible
> Algorithms Reverse Affinity Constraint" - 
> draft-ietf-lsr-igp-flex-algo-reverse-
> affinity-03"
> 
> Please review the document and indicate your support or objections by
> February 7th, 2025. The extra week is to account for the Lunar New Year
> holiday.
> 
> Thanks,
> Acee
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