RE: [v6ops] Stateful SLAAC (draft-ietf-v6ops-unique-ipv6-prefix-per-host)

"Van De Velde, Gunter (Nokia - BE/Antwerp)" <gunter.van_de_velde@nokia.com> Mon, 13 November 2017 02:55 UTC

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From: "Van De Velde, Gunter (Nokia - BE/Antwerp)" <gunter.van_de_velde@nokia.com>
To: Ole Troan <otroan@employees.org>, Fernando Gont <fgont@si6networks.com>
CC: "6man@ietf.org" <6man@ietf.org>, "v6ops@ietf.org WG" <v6ops@ietf.org>
Subject: RE: [v6ops] Stateful SLAAC (draft-ietf-v6ops-unique-ipv6-prefix-per-host)
Thread-Topic: [v6ops] Stateful SLAAC (draft-ietf-v6ops-unique-ipv6-prefix-per-host)
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Date: Mon, 13 Nov 2017 02:55:20 +0000
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Same for the Nokia implementation. It is session based p-t-p model and the session state is build upon for example IPoE, EAP-SIM, etc.... 

WG decided to exclude how the session state is achieved on the first hop router. We as WG decided that creation and maintaining of state on that access router over reboots is outside of scope for the /64 allocation per connected EU. Nothing new from standards perspective to give /64 to a EU is needed, then beyond what is in the document. We are discussing scope creep.

G/

-----Original Message-----
From: v6ops [mailto:v6ops-bounces@ietf.org] On Behalf Of Ole Troan
Sent: Monday, November 13, 2017 10:43
To: Fernando Gont <fgont@si6networks.com>;
Cc: 6man@ietf.org; v6ops@ietf.org WG <v6ops@ietf.org>;
Subject: Re: [v6ops] Stateful SLAAC (draft-ietf-v6ops-unique-ipv6-prefix-per-host)

Fernando,

>> <mailto:touch@strayalpha.com>> wrote:
>> 
>>    FWIW, I would agree with that if this were an issue of WG focus creep.
>>    AFAICT, the issue appears to go much deeper, which means it's an Area
>>    boundary issue if it is indeed a protocol extension.
>> 
>>    IMO, OPS stays in the lane of suggesting sets of *existing* protocol
>>    parameters and features, or indicates where MAYs and SHOULDs can be
>>    relaxed (or not) - all of this remains compliant with the protocol.
>>    Changes to the protocol should not be considered operational decisions,
>>    again IMO.
>> 
>> 
>> Excuse me, but I really cannot fathom why we are saying that this 
>> draft defines a new protocol
> 
> Model SLAAC with a FSM for the client, and a FSM for the server. Now 
> apply this document. And look at the SLAAC router FSM.
> 
> Did it change (and quite a lot, actually)?  If yes, then you ahve 
> changed the protocol. If not, you didn't do the FSM properly.

Or do as I do in my implementation.
Model each host as being on it's own point to point interface.
Configure the IPv6 prefix on that interface. That configured state is exactly like what we have in classic SLAAC.

Ole