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

Nick Hilliard <nick@foobar.org> Sun, 12 November 2017 12:56 UTC

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Date: Sun, 12 Nov 2017 12:56:36 +0000
From: Nick Hilliard <nick@foobar.org>
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To: Fernando Gont <fgont@si6networks.com>
CC: Joe Touch <touch@strayalpha.com>, james woodyatt <jhw@google.com>, IPv6 Operations <v6ops@ietf.org>, "6man@ietf.org" <6man@ietf.org>, "6man-ads@tools.ietf.org" <6man-ads@ietf.org>, "v6ops-ads@ietf.org" <v6ops-ads@ietf.org>, draft-ietf-v6ops-unique-ipv6-prefix-per-host@tools.ietf.org
Subject: Re: [v6ops] Stateful SLAAC (draft-ietf-v6ops-unique-ipv6-prefix-per-host)
References: <be9724f5-2ff5-d90c-2749-ecae2c628b78@si6networks.com> <CAKD1Yr0_a2Qm8U4oK+BQU57DeDUD9i-o_+G+YhnH4pVXRxmxxQ@mail.gmail.com> <BBB987EF-D91C-4FD1-9084-21382F24E7BF@gmail.com> <37b58331-ecfc-aaf8-bde4-91dd4d375834@si6networks.com> <52C752BD-2347-4704-9103-89BD979D7C2D@google.com> <5fc6a1b1-7707-b5ab-7820-98f9f07b794c@strayalpha.com> <ae36072e-5cf3-1bd3-88ed-bf1d3d0f6507@si6networks.com>
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Fernando Gont wrote:
> FWIW, I agree with everything that Joe said below.
> 
> Now, consider the FSM of router side of SLAAC, and compare it with the
> FSM of the mechanism being proposed. The difference should be evident.

The ID also omits any discussion about how this state is managed in the
context of source address validation by edge devices.

This would be important from an operational point of view, as it
introduces a substantial degree of state management into the network
infrastructure, not just the next-hop router.

Nick