Re: [dhcwg] Fwd: New Version Notification for draft-ietf-dhc-sedhcpv6-20.txt

"Templin, Fred L" <Fred.L.Templin@boeing.com> Wed, 15 February 2017 18:07 UTC

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From: "Templin, Fred L" <Fred.L.Templin@boeing.com>
To: =?utf-8?B?56We5piO6YGU5ZOJ?= <jinmei@wide.ad.jp>
Thread-Topic: [dhcwg] Fwd: New Version Notification for draft-ietf-dhc-sedhcpv6-20.txt
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Date: Wed, 15 Feb 2017 18:07:29 +0000
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Subject: Re: [dhcwg] Fwd: New Version Notification for draft-ietf-dhc-sedhcpv6-20.txt
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Hi Jinmei-san,

> -----Original Message-----
> From: jinmei.tatuya@gmail.com [mailto:jinmei.tatuya@gmail.com] On Behalf Of ????
> Sent: Wednesday, February 15, 2017 9:52 AM
> To: Templin, Fred L <Fred.L.Templin@boeing.com>
> Cc: Lishan Li <lilishan48@gmail.com>om>; dhcwg <dhcwg@ietf.org>
> Subject: Re: [dhcwg] Fwd: New Version Notification for draft-ietf-dhc-sedhcpv6-20.txt
> 
> At Fri, 10 Feb 2017 22:46:58 +0000,
> "Templin, Fred L" <Fred.L.Templin@boeing.com> wrote:
> 
> > Hi, I have not reviewed this latest version of the draft but in my understanding
> > from past discussions is that this mechanism always encrypts and there is no
> > longer an "authentication-only" mode. That being the case, if this work is to go
> > forward the WG must first resurrect the Relay Agent Assignment Notification
> > (RAAN) draft:
> >
> > https://www.ietf.org/mail-archive/web/dhcwg/current/msg17651.html
> >
> > Otherwise, sedhcpv6 would be incompatible with Relays that must glean route
> > information during DHCPv6 PD exchanges.
> 
> I've realized I misunderstood the meaning of zero IA-id (it doesn't
> mean skipping encryption).  So, yes, it's incompatible with such
> peeking relays.

Thanks for confirming.

> It's probably better to describe the issue in
> sedhcpv6 with a reference to the RAAN draft as a possible future
> solution to it if and when it's adopted and standardized.

If sedhcpv6 will not support an authentication-only mode, then it
can' t go forward until RAAN is adopted as a wg item. Otherwise,
an encryption-only sedhcpv6 w/o RAAN would break DHCPv6 PD.

Thanks - Fred
fred.l.templin@boeing.com

> --
> JINMEI, Tatuya