Re: [dhcwg] DHCP hackathon in Prague: SeDHCPv6

Ted Lemon <mellon@fugue.com> Wed, 07 June 2017 21:49 UTC

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From: Ted Lemon <mellon@fugue.com>
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Date: Wed, 7 Jun 2017 17:49:25 -0400
In-Reply-To: <201706072125.v57LPHu8070750@givry.fdupont.fr>
Cc: Tomek Mrugalski <tomasz.mrugalski@gmail.com>, dhcwg@ietf.org
To: Francis Dupont <Francis.Dupont@fdupont.fr>
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Subject: Re: [dhcwg] DHCP hackathon in Prague: SeDHCPv6
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On Jun 7, 2017, at 5:25 PM, Francis Dupont <Francis.Dupont@fdupont.fr> wrote:
> I am afraid you are replacing the address bootstrap mess by the security
> bootstrap mess but there is a security protocol which includes address
> bootstrapping, it is IKEv2 so IMHO we should try it as on the paper
> it has all we need.

Pretty much everything you said here assumes that the DHCP client has a routable address.   It's the fact that it doesn't that makes this hard.

Also, a key agreement protocol is probably not a good idea if we care about privacy.

And we already talked about how to do TOFU, and I think that applies just as well here as to the current spec.