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

Joe Touch <touch@strayalpha.com> Sat, 11 November 2017 00:36 UTC

Return-Path: <touch@strayalpha.com>
X-Original-To: ipv6@ietfa.amsl.com
Delivered-To: ipv6@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 329AB126C83; Fri, 10 Nov 2017 16:36:46 -0800 (PST)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.99
X-Spam-Level:
X-Spam-Status: No, score=-1.99 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, T_SPF_PERMERROR=0.01] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=strayalpha.com
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 5gmAVjSNJox3; Fri, 10 Nov 2017 16:36:45 -0800 (PST)
Received: from server217-3.web-hosting.com (server217-3.web-hosting.com [198.54.115.226]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 0D5F2124B09; Fri, 10 Nov 2017 16:36:44 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=strayalpha.com; s=default; h=Content-Transfer-Encoding:Content-Type: In-Reply-To:MIME-Version:Date:Message-ID:From:References:Cc:To:Subject:Sender :Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=kfPniqMCgM93abaB0jw0BmrvITc2KY4y6b6A26o0txM=; b=48VPnHUnZXTU5svJZ6nI2k+dOk 63VPJ2x/E2rZARANAXaX6gi7PG+YUFtTsQD6+Ty+Q5ZWz8oALbPqDtJrSAzfvT0UaJj6/xro+mGRG Id4tYVm9ZDfDFxA6ARirBDHVg9GAYyHLc/aaRbT4CyrQHZ4cQsnSAov/r3Q04v7/HWexvuqOFjqVr CtqHyaRgnSvAk7pxuIN6Fh8aTenDW2ULzJmnCB7TOINqaMJUlzPSM+GODSPhPnNGy4+t+YGoLekBX ZKCicT8tTvDO7RfpDJH7SyTMpPAbOJwHzWfmWCmvDeQFwm1nK/Q8wqVrAmv28dgMygmOjqmbTbep4 IUWVfpdA==;
Received: from cpe-172-250-240-132.socal.res.rr.com ([172.250.240.132]:62884 helo=[192.168.1.189]) by server217.web-hosting.com with esmtpsa (TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4.89) (envelope-from <touch@strayalpha.com>) id 1eDJmq-003Hpa-1h; Fri, 10 Nov 2017 19:36:42 -0500
Subject: Re: [v6ops] Stateful SLAAC (draft-ietf-v6ops-unique-ipv6-prefix-per-host)
To: james woodyatt <jhw@google.com>, Fernando Gont <fgont@si6networks.com>
Cc: 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
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>
From: Joe Touch <touch@strayalpha.com>
Message-ID: <5fc6a1b1-7707-b5ab-7820-98f9f07b794c@strayalpha.com>
Date: Fri, 10 Nov 2017 16:36:34 -0800
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0
MIME-Version: 1.0
In-Reply-To: <52C752BD-2347-4704-9103-89BD979D7C2D@google.com>
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 8bit
Content-Language: en-US
X-OutGoing-Spam-Status: No, score=-1.0
X-AntiAbuse: This header was added to track abuse, please include it with any abuse report
X-AntiAbuse: Primary Hostname - server217.web-hosting.com
X-AntiAbuse: Original Domain - ietf.org
X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12]
X-AntiAbuse: Sender Address Domain - strayalpha.com
X-Get-Message-Sender-Via: server217.web-hosting.com: authenticated_id: touch@strayalpha.com
X-Authenticated-Sender: server217.web-hosting.com: touch@strayalpha.com
X-Source:
X-Source-Args:
X-Source-Dir:
X-From-Rewrite: unmodified, already matched
Archived-At: <https://mailarchive.ietf.org/arch/msg/ipv6/1XD-6VPLNgRLtiohY2hmmvu0z6w>
X-BeenThere: ipv6@ietf.org
X-Mailman-Version: 2.1.22
Precedence: list
List-Id: "IPv6 Maintenance Working Group \(6man\)" <ipv6.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/ipv6>, <mailto:ipv6-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/ipv6/>
List-Post: <mailto:ipv6@ietf.org>
List-Help: <mailto:ipv6-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/ipv6>, <mailto:ipv6-request@ietf.org?subject=subscribe>
X-List-Received-Date: Sat, 11 Nov 2017 00:36:46 -0000


On 11/10/2017 1:58 PM, james woodyatt wrote:
>
> I think the definition of “protocol” in the New Oxford Dictionary is
> adequate.

The definition there is certainly true, but not adequate except for an
English paper. "rules" are too vague.

In networking, a protocol is:

    a set of rules
    a set of states
    a set of messages that are exchanged (often called the "on the wire"
part)
    a set of events/messages/actions that represent the behavior of each
endpoint (i.e., to upper layers)
    a set of time events
    a set of rules that relate incoming
messages/timer-events/user-actions and state to yield outgoing
messages/timer-sets/user-reports and new states

(the simplest way to express this is as a FSM, which is the most generic
form of computation where a machine cannot revoke its output - which is
why it accurately represents the ends of a protocol)

If you take away any of these (except state and, in limited cases,
time), you cease to have a useful protocol.

If you change any of these, you have a new protocol.

Joe