Re: [Sidrops] [GROW] Any credence to AS_SET in the *middle* between AS_SEQUENCEs?

Randy Bush <randy@psg.com> Tue, 26 July 2022 22:52 UTC

Return-Path: <randy@psg.com>
X-Original-To: sidrops@ietfa.amsl.com
Delivered-To: sidrops@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 1E764C13632E; Tue, 26 Jul 2022 15:52:42 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.909
X-Spam-Level:
X-Spam-Status: No, score=-1.909 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, RCVD_IN_DNSWL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01] autolearn=ham autolearn_force=no
Received: from mail.ietf.org ([50.223.129.194]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id DvBNE08bqYZD; Tue, 26 Jul 2022 15:52:41 -0700 (PDT)
Received: from ran.psg.com (ran.psg.com [IPv6:2001:418:8006::18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 2DD71C15A723; Tue, 26 Jul 2022 15:52:37 -0700 (PDT)
Received: from localhost ([127.0.0.1] helo=ryuu.rg.net) by ran.psg.com with esmtp (Exim 4.93) (envelope-from <randy@psg.com>) id 1oGTPl-0023S5-Nj; Tue, 26 Jul 2022 22:52:33 +0000
Date: Tue, 26 Jul 2022 15:52:32 -0700
Message-ID: <m2y1wfcwr3.wl-randy@psg.com>
From: Randy Bush <randy@psg.com>
To: Job Snijders <job@fastly.com>
Cc: SIDR Operations WG <sidrops@ietf.org>, GMO Crops <grow@ietf.org>, draft-ietf-sidrops-aspa-verification@ietf.org
In-Reply-To: <YuBg9RqurR3PfJJl@snel>
References: <SA1PR09MB8142D357A98BFAAF206C387C848F9@SA1PR09MB8142.namprd09.prod.outlook.com> <66814cfa-8425-8063-9193-272bc8b28291@foobar.org> <1F8421AA-8514-41FB-A047-EEDAF975B934@pfrc.org> <SA1PR09MB81421D152AC2DA200EDE1D9784919@SA1PR09MB8142.namprd09.prod.outlook.com> <E19A89F1-B892-4D41-99A3-5C551C7FB640@pfrc.org> <SA1PR09MB8142B461A3FCF715071F7EBD84919@SA1PR09MB8142.namprd09.prod.outlook.com> <F02D928E-1600-42C4-B8D0-9A544849A22D@pfrc.org> <m24jzagyi8.wl-randy@psg.com> <SA1PR09MB81422706D5E43E581A75E5B384929@SA1PR09MB8142.namprd09.prod.outlook.com> <CAEGSd=AYgEqhcsFvoxppkBQYXOVcEiJ7qe2MrL4-qDCQcKDJZw@mail.gmail.com> <YuBg9RqurR3PfJJl@snel>
User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/26.3 Mule/6.0 (HANACHIRUSATO)
MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue")
Content-Type: text/plain; charset="ISO-8859-1"
Content-Transfer-Encoding: quoted-printable
Archived-At: <https://mailarchive.ietf.org/arch/msg/sidrops/cxJ_cqwbpmovoLIWykDTC5qq93M>
Subject: Re: [Sidrops] [GROW] Any credence to AS_SET in the *middle* between AS_SEQUENCEs?
X-BeenThere: sidrops@ietf.org
X-Mailman-Version: 2.1.39
Precedence: list
List-Id: A list for the SIDR Operations WG <sidrops.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/sidrops>, <mailto:sidrops-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/sidrops/>
List-Post: <mailto:sidrops@ietf.org>
List-Help: <mailto:sidrops-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/sidrops>, <mailto:sidrops-request@ietf.org?subject=subscribe>
X-List-Received-Date: Tue, 26 Jul 2022 22:52:42 -0000

> Ultimately it is up to network operators whether they deploy routing
> policy that reject ASPA-Invalid routes.

8481 §5

> What's important here is to mark routes that contain an AS_SET in the
> AS_PATH as 'Invalid' when performing ASPA verification.

agree

>> If the WG agrees to change normalative language from 'SHOULD' to
>> 'MUST', the ASPA document will follow.
> I don't see that dependency; however there seems to be good consensus
> to remove the "Unverifiable" state from the Internet-Draft and instead
> mark routes as "Invalid" if an AS_SET is encountered anywhere in the
> AS_PATH.

i am not sure i follow; i am not as sure as i should be of your words;
i.e. which draft.

i suggest we unequivocally stomp out as-sets wherever.  while i am sure
corner-case aficionados can dos me with obscure needs in the pacific
islands; procmail and the rising sea levels will take care of it.

randy