Hi Mahesh,

thanks for your help in improving the document.

I’ve just updated the writeup to highlight the dependency to 
draft-ietf-pim-rfc8059-9798bis.

Ciao

L.

> On 22 Oct 2026, at 19:12, Mahesh Jethanandani <[email protected]> wrote:
> 
> Hi Prasad, Ketan and Luigi,
> 
> Thanks for the updates. I've checked -13 against my comments:
> 
> - The orphaned Informative entry for draft-ietf-pim-rfc8059-9798bis is
>   gone, and Section 8.3.2 now makes both address checks MUST with an
>   explicit discard rule. Both COMMENTs are resolved.
> 
> - On the DISCUSS, I'm fine with keeping the normative reference to
>   draft-ietf-pim-rfc8059-9798bis and letting this document wait in the
>   RFC Editor queue in MISREF until the PIM document is approved, as
>   Ketan has suggested.
> 
> The one thing still outstanding is the shepherd write-up. Question 18
> still says "No normative references are in unclear state or not
> ready." That was true when it was written against -06, but it isn't
> now: the document has a normative reference to a PIM WG draft that
> hasn't been through WGLC yet. Luigi, could you update the answer to
> Q18 to list draft-ietf-pim-rfc8059-9798bis and note the plan (the
> document will be held in MISREF until the PIM draft is approved)?
> Once that's done, I’ll be happy to clear my DISCUSS.
> 
> Thanks
> 
>> On Oct 11, 2026, at 8:44 AM, Vengada Prasad Govindan (venggovi) 
>> <[email protected]> wrote:
>> 
>> Hello Mahesh,
>> Thanks for your notes, please see inline with GVP1> All comments accepted 
>> are incorporated in ver-12
>> Thanks
>> Prasad
>> 
>> -----Original Message-----
>> From: Mahesh Jethanandani via Datatracker <[email protected]> 
>> Sent: Wednesday, September 16, 2026 12:16 AM
>> To: The IESG <[email protected]>
>> Cc: [email protected]; [email protected]; 
>> [email protected]; [email protected]
>> Subject: Mahesh Jethanandani's Discuss on draft-ietf-lisp-rfc6831bis-08: 
>> (with DISCUSS and COMMENT)
>> 
>> Mahesh Jethanandani has entered the following ballot position for
>> draft-ietf-lisp-rfc6831bis-08: 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-lisp-rfc6831bis/
>> 
>> 
>> 
>> ----------------------------------------------------------------------
>> DISCUSS:
>> ----------------------------------------------------------------------
>> 
>> Section 16, Normative References:
>> 
>> 1234 >    [I-D.ietf-pim-rfc8059-9798bis]
>> 1235 >               Govindan, V. P. and S. Venaas, "PIM Join Attributes for
>> 1236 >               Locator/ID Separation Protocol (LISP) Environments", 
>> Work
>> 1237 >               in Progress, Internet-Draft, draft-ietf-pim-rfc8059-
>> 1238 >               9798bis-01, 14 March 2026,
>> 
>> This is a normative reference to draft-ietf-pim-rfc8059-9798bis-01,
>> which is the specification this document actually depends on for the
>> PIM Join/Prune attributes it uses:
>> 
>> 414 >        [I-D.ietf-pim-rfc8059-9798bis]; this document specifies no
>> 415 >        additional state machinery.
>> 
>> 653 >    specified in [I-D.ietf-pim-rfc8059-9798bis].
>> 
>> draft-ietf-pim-rfc8059-9798bis-01 expired in March 2026. There's
>> currently no path to publication for it.
>> 
>> The history here is worth spelling out, because I think it points to
>> an easy fix. Through -06, this document cited RFC 8059 and RFC 9798
>> directly for these attributes. Darren Dukes' RTGDIR review asked
>> whether those two should be normative or informative references. The
>> author's reply on the list was, in effect, that the question was moot
>> because both were being folded into a single reference to
>> draft-ietf-pim-rfc8059-9798bis, and that's what shipped in -08. Having
>> now read that bis draft, I don't think the trade was a good one: it's
>> a pure consolidation of RFC 8059 and RFC 9798 (it just moves the
>> Transport Attribute and Receiver RLOC Attribute registrations into one
>> document) and doesn't define anything new that this document actually
>> relies on. So the change that answered Darren's question left the
>> document with an unresolved dependency in its place.
>> 
>> I'd ask the authors to revert Section 4 item 8 and Section 7.1 to
>> citing RFC 8059 and RFC 9798 directly, and drop the reference to the
>> bis draft. That does bring Darren's original question back: RFC 8059
>> and RFC 9798 are Experimental, and this document targets Proposed
>> Standard, so citing them normatively is a downref. But that's a
>> well-understood problem with a known process.
>> 
>> I'd also note the shepherd write-up (answering as of -06) states there
>> are no normative references in an unclear state. That was accurate
>> when written; the -07/-08 revision changed that, and it's worth a
>> fresh look before this goes further.
>> GVP1>  draft-ietf-pim-rfc8059-9798-bis is a normative reference. This 
>> document will be progressed.
>> 
>> ----------------------------------------------------------------------
>> COMMENT:
>> ----------------------------------------------------------------------
>> 
>> Section 17, Informative References, still carries a second, uncited
>> entry for the same draft:
>> 
>> 1314 >    [draft-ietf-pim-rfc8059-9798bis]
>> 1315 >               Govindan, V. and S. Venaas, "PIM Join Attributes for
>> 1316 >               Locator/ID Separation Protocol (LISP) Environments", 
>> Work
>> 1317 >               in Progress, Internet-Draft, draft-ietf-pim-rfc8059-
>> 1318 >               9798bis-01, 14 March 2026,
>> 
>> Nothing in the body cites this anchor - both in-text uses I found
>> (Section 4 item 8 and Section 7.1) use [I-D.ietf-pim-rfc8059-9798bis],
>> which is the normative entry. This looks like debris from the same
>> edit that produced my DISCUSS.
>> GVP1> Not Informative anymore. 
>> ---
>> 
>> Building on Ketan's DISCUSS-2 about the unicast receiving procedure,
>> the normative text in Section 8.3.2 has a scope problem:
>> 
>> 811 >    When using a unicast underlay, an ETR MUST accept a unicast LISP-
>> 812 >    encapsulated multicast packet only where the outer destination
>> 813 >    address is one of its own RLOCs.  Additionally, it MAY check whether
>> 814 >    the outer source address is the ITR RLOC it selected for the
>> 815 >    (S-EID,G) in question.  It MUST discard the packet otherwise.
>> 
>> "Otherwise" is ambiguous between the two preceding sentences. If it
>> only refers back to the destination-address MUST, the optional source
>> check in the middle sentence is pointless - there's no discard
>> obligation tied to failing it. If it's meant to cover a failed source
>> check too, that needs to be MUST-level for a conforming implementation
>> to know what to do when it chooses to perform the check at all.
>> GVP1> Fixed this. Both the conditions are made MUST, removed otherwise.
>> 
>> ----------------------------------------------------------------------
>> NIT
>> ----------------------------------------------------------------------
>> 
>> All comments below are about very minor potential issues that you may
>> choose to address in some way - or ignore - as you see fit. Some were
>> flagged by automated tools (via
>> https://github.com/larseggert/ietf-reviewtool), so there will likely
>> be some false positives. There is no need to let me know what you did
>> with these suggestions.
>> 
>> 195 >    [I-D.ietf-lisp-multicast-deploy].  Deployments have successfuly
>> s/successfuly/successfully/
>> GVP1> Fixed
>> 203 >    This document obsolotes [RFC6831], please see Appendix A for 
>> changes.
>> s/obsolotes/obsoletes/
>> GVP1> Fixed
>> 660 >    There is no D -->ata-Probe logic for ETRs as there can be in the
>> s/D -->ata-Probe/Data-Probe/
>> GVP1> Fixed
>> 1016 >       defined in Sec 5.4 of [RFC9301] When the M Priority is set to 
>> 255,
>> s/[RFC9301] When/[RFC9301].  When/
>> GVP1> Fixed
>> 1368 >    important changes incude:
>> s/incude/include/
>> GVP1> Fixed
>> 
>> 
> 
> 
> Mahesh Jethanandani
> [email protected]
> 
> 
> 
> 
> 
> 

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