Re: [v6ops] Clarification/addition on the cpe-slaac doc.

"Bernie Volz (volz)" <volz@cisco.com> Wed, 10 February 2021 15:37 UTC

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From: "Bernie Volz (volz)" <volz@cisco.com>
To: Warren Kumari <warren@kumari.net>, Ole Troan <otroan@employees.org>
CC: IPv6 Operations <v6ops@ietf.org>
Thread-Topic: [v6ops] Clarification/addition on the cpe-slaac doc.
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Subject: Re: [v6ops] Clarification/addition on the cpe-slaac doc.
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It seems odd to me to be cherry picking things for RFC-8415 to reiterate as requirements?

Doesn’t that open up the possibility that someone skips other things because “well it wasn’t in the CPE-SLAAC” requirements?


  *   Bernie

From: v6ops <v6ops-bounces@ietf.org> On Behalf Of Warren Kumari
Sent: Wednesday, February 10, 2021 10:09 AM
To: Ole Troan <otroan@employees.org>
Cc: IPv6 Operations <v6ops@ietf.org>
Subject: Re: [v6ops] Clarification/addition on the cpe-slaac doc.



On Wed, Feb 10, 2021 at 10:05 AM <otroan@employees.org<mailto:otroan@employees.org>> wrote:
> During the final editing of cpe-slaac, the authors noticed that we should have included:
> “WPD-10: CE routers SHOULD, by default, attempt to use a stable IAID value that does not change between CE restarts, DHCPv6 client restarts, or interface state changes. e.g., Transient PPP interfaces.”
>
> To me this seems like an obvious and non-contentious clarification (it's already required in RFC8145), and so I'm asking the authors to include it while addressing the other IESG comments/ballots.

I think you mean 8415, but at least all the digits are there.

I did indeed :-)


I support the change, but I do think it should be strengthened.
An "unintended" change in IAID has dire consequences for the end-user network.

"WPD-10: CE routers MUST by default use a stable IAID value that does not change between CE restarts, DHCPv6 client restarts, or interface state changes. e.g., Transient PPP interfaces."

8415 has: "For any given use of an IA by the client, the IAID for that IA MUST be consistent across restarts of the DHCP client."...

Fair enough. That's better, and the new proposed text; I actually intended to copy and paste the RFC 8415 (see, I *can* type :-)) but forgot....
Thanks!
W



Ole


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