[IPv6] Second Working Group Last Call for <draft-ietf-6man-rfc6724-update>

Given the number of changes since the first w.g. last call, the chairs, in consultation with the authors, are staring a second 6MAN working group last call for this document.

This email starts a second two week 6MAN Working Group Last Call on advancing "Preference for IPv6 ULAs over IPv4 addresses in RFC6724" document

    https://datatracker.ietf.org/doc/draft-ietf-6man-rfc6724-update/

 as a Standards Track document.

A summary of changes since the -06 version is below.   A good diff to review is:

https://author-tools.ietf.org/iddiff?url1=draft-ietf-6man-rfc6724-update-08&url2=draft-ietf-6man-rfc6724-update-06&difftype=--html

[New draft on left due to line length problem with old draft]

Substantive comments and statements of support for publishing this document should be directed to the ipv6@ietf.org mailing list. Editorial suggestions can be sent to the authors.  This last call will end on 24 April 2024 23:59 UTC.

Also, one issue the authors would like feedback on is if the requirement is a SHOULD or MUST for inserting known-local ULA prefixes into their policy table with a precedence above both GUAs and IPv4, while leaving all other general ULAs at a lower precedence.  It is a SHOULD in the -08 draft, but there has been support for a MUST in the discussion. 

Bob, Jen, Ole
6MAN chairs

> Begin forwarded message:
> 
> From: Tim Chown <Tim.Chown=40jisc.ac.uk@dmarc.ietf.org>
> Subject: Re: [IPv6] I-D Action: draft-ietf-6man-rfc6724-update-08.txt
> Date: April 9, 2024 at 7:47:57 AM PDT
> To: IPv6 List <ipv6@ietf.org>
> 
> Hi,
> 
> Actually it works better I notice with 08 on the left and 06 on the right, as -06 has the broken formatting, so please check the diff from -06 to the current -08 using:
> 
> https://author-tools.ietf.org/iddiff?url1=draft-ietf-6man-rfc6724-update-08&url2=draft-ietf-6man-rfc6724-update-06&difftype=--html
> 
> The changes are largely around making the MAY insert local entries into a SHOULD insert known-locals, with a little more text on how we’d determine those.
> 
> Tim
> 
>> On 9 Apr 2024, at 15:13, Nick Buraglio <buraglio@forwardingplane.net> wrote:
>> 
>> We have published -08 of the rfc6724 update, this fixes some
>> formatting and other typographical oversights
>> The following sections address comments from the lis (difft from -06
>> to -08 is the most useful comparison):
>> https://author-tools.ietf.org/iddiff?url1=draft-ietf-6man-rfc6724-update-06&url2=draft-ietf-6man-rfc6724-update-08&difftype=--html
>> 
>> 
>> Brief overview of the changes from -06:
>> 
>> Section 2:
>> Add terminology section and define known-local
>> 
>> Section 3:
>> Add section on elevating
>> upgrades the requirement in RFC 6724 for nodes to insert a higher
>> precedence entry in the policy table for observed ULA prefixes that
>> are known to be local, referred to in this document as "known-local"
>> ULAs, from a MAYto a SHOULD.
>> 
>> Section 4:
>> Changes the 6to4 prefix deprecation to match Teredo, adds further
>> clarity and reference to RFC6724 section 10.7
>> 
>> Section 5:
>> Add text to upgrade the requirement to automatically insert
>> known-local ULAs into a node's policy table from a MAY to a SHOULD.
>> 
>> Section 5.3
>> Further define insertion and removal parameters and requirements for
>> known-local ULA prefixes into table and associated values and label
>> 
>> Section 7.2:
>> Further clarify GUA-GUA preferred over ULA-ULA details
>> 
>> Section 7.3:
>> Further clarify ULA-ULA preferred over IPv4-IPv4 details
>> 
>> Section 8:
>> Housekeeping and formatting changes
>> 
>> Section 9.2:
>> Describe the new known-local interaction and how it addresses issues
>> with ULAs in global DNS
>> 
>> 
>> 
>> Further copy edit and housekeeping.
>> 
>> Thanks!
>> 
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