Re: [v6ops] Benjamin Kaduk's No Objection on draft-ietf-v6ops-cpe-slaac-renum-07: (with COMMENT)

[Fernando Gont <[e-mail]>]

Hello, Ben,

On 25/2/21 23:20, Benjamin Kaduk wrote:
> On Thu, Feb 25, 2021 at 05:27:36PM -0300, Fernando Gont wrote:
>> Hello, Ben,
>>
>> Thanks a lot for our comments! In-line....
>>
>> On 23/2/21 19:13, Benjamin Kaduk via Datatracker wrote:
>> [....]
>>> Section 3
[...]
> 
> The thread has continued and I think has gotten into enough details that I
> don't know much about that my insight will not be very valuable.  About the
> only contribution I might make is that a construction of the form "MUST by
> default behave such that [list of things] or behave according to RFC 7844"
> might be a little easier to read, since it's a choice rather than a primary
> behavior and exception.

Fair enough.

I'd suggest something like:

      o  WPD-10: CE Routers MUST by default use a WAN-side IAID
         value that is stable between CE Router
         restarts, DHCPv6 client restarts, or interface state changes
         (e.g., Transient PPP interfaces), or behave according to
         [RFC7844].  See Section 3.2 for further details.

My only concern here is that, in a way, this reads a bit like "pick any 
of these two behaviors", whereas what we want is something more along 
the lines of "it MUST do this, unless you implement the anonymity 
profiles. (i.e., if you pick the RFC7844, it should be because you do 
mean the CE Router to implement the anonymity profiles).



So an alternative could be:

      o  WPD-10: CE Routers MUST by default use a WAN-side IAID
         value that is stable between CE Router
         restarts, DHCPv6 client restarts, or interface state changes
         (e.g., Transient PPP interfaces), unless the CE Router
         employs [RFC7844] for the WAN-side.  See Section 3.2 for
         further details.

(might spell out the title of RFC7844, too....)

Thoughts? Suggestions?

Thanks!

Regards,
-- 
Fernando Gont
SI6 Networks
e-mail: [e-mail]
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