Re: [netmod] rfc6991bis: loopback addresses

"Reshad Rahman (rrahman)" <rrahman@cisco.com> Mon, 20 July 2020 18:49 UTC

Return-Path: <rrahman@cisco.com>
X-Original-To: netmod@ietfa.amsl.com
Delivered-To: netmod@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id 2E2D43A0DD5 for <netmod@ietfa.amsl.com>; Mon, 20 Jul 2020 11:49:12 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -9.62
X-Spam-Level:
X-Spam-Status: No, score=-9.62 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_PASS=-0.001, URIBL_BLOCKED=0.001, USER_IN_DEF_DKIM_WL=-7.5] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (1024-bit key) header.d=cisco.com header.b=Zyk6zMTT; dkim=pass (1024-bit key) header.d=cisco.onmicrosoft.com header.b=mLXdtZow
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 02jEKeqFhKCA for <netmod@ietfa.amsl.com>; Mon, 20 Jul 2020 11:49:10 -0700 (PDT)
Received: from rcdn-iport-6.cisco.com (rcdn-iport-6.cisco.com [173.37.86.77]) (using TLSv1.2 with cipher DHE-RSA-SEED-SHA (128/128 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id A74673A0DD3 for <netmod@ietf.org>; Mon, 20 Jul 2020 11:49:10 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=3150; q=dns/txt; s=iport; t=1595270950; x=1596480550; h=from:to:cc:subject:date:message-id:references: in-reply-to:content-id:content-transfer-encoding: mime-version; bh=w6yizl9JoqY5Gr6ztoO3IPhe/WeWqornMqizRCcf0Og=; b=Zyk6zMTTW4gJ9rsDVDuvM6IPgFQqO3IbS3Pci+sGZU/OSxZ02Ns3hGRY qqpmLznMZLYpKIVqOLPh7bZCmOKsv/p9ZJo3RK8l9RwLWdmCZRaLLGyZv +8UX+DYyCjfnJ9dsIeHblQy3zNu8QxBSyFuOfa4XyzTy7JgB/UTHbDYAu 8=;
IronPort-PHdr: =?us-ascii?q?9a23=3AJmKshxKhhLOdvXBj4tmcpTVXNCE6p7X5OBIU4Z?= =?us-ascii?q?M7irVIN76u5InmIFeGvq8/kVnITcDS5LRZjeuTsKSmVWFTqZqCsXVXdptKWl?= =?us-ascii?q?dFjMgNhAUvDYaDDlGzN//laSE2XaEgHF9o9n22Kw5ZTcD5YVCBv3uz/XsbFV?= =?us-ascii?q?PiMwswJeCzFoOBx8iy3vq5rpvUZQgAjTGhYLR0eROxqwi01IEWjIJuJ7x3xA?= =?us-ascii?q?HOpy5Dev9dwiVjIlfAkg=3D=3D?=
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: =?us-ascii?q?A0CvAABz5hVf/4MNJK1dAxoBAQEBAQE?= =?us-ascii?q?BAQEBAwEBAQESAQEBAQICAQEBAUCBSoFSUQdvWC8sCoQpg0YDjUqYXoJTA1U?= =?us-ascii?q?LAQEBDAEBIwoCBAEBhEwCF4IIAiQ4EwIDAQELAQEFAQEBAgEGBG2FXAyFcQE?= =?us-ascii?q?BAQQSEREMAQE3AQ0CAgEIDgIFAQICAiYCAgIZFxUQAgQOBSKDBAGCSwMuAQ6?= =?us-ascii?q?gbgKBOYhhdoEygwEBAQWBNwKDWxiCDgMGBYEJKgGCaYJPRz+GMxqBQT+BESc?= =?us-ascii?q?cgk0+glwBAQOBcwomgk8zgi2PLSmDAKJ1CoJdiFaRDQMen0icKJA3hCECBAI?= =?us-ascii?q?EBQIOAQEFgWojgVdwFWUBgj5QFwINjh6DcTOEYYVCdDcCBgEHAQEDCXyNcwG?= =?us-ascii?q?BEAEB?=
X-IronPort-AV: E=Sophos;i="5.75,375,1589241600"; d="scan'208";a="802286323"
Received: from alln-core-1.cisco.com ([173.36.13.131]) by rcdn-iport-6.cisco.com with ESMTP/TLS/DHE-RSA-SEED-SHA; 20 Jul 2020 18:49:09 +0000
Received: from XCH-ALN-004.cisco.com (xch-aln-004.cisco.com [173.36.7.14]) by alln-core-1.cisco.com (8.15.2/8.15.2) with ESMTPS id 06KIn954010457 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=FAIL); Mon, 20 Jul 2020 18:49:09 GMT
Received: from xhs-rtp-001.cisco.com (64.101.210.228) by XCH-ALN-004.cisco.com (173.36.7.14) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 20 Jul 2020 13:49:09 -0500
Received: from xhs-rcd-002.cisco.com (173.37.227.247) by xhs-rtp-001.cisco.com (64.101.210.228) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 20 Jul 2020 14:49:07 -0400
Received: from NAM10-BN7-obe.outbound.protection.outlook.com (72.163.14.9) by xhs-rcd-002.cisco.com (173.37.227.247) with Microsoft SMTP Server (TLS) id 15.0.1497.2 via Frontend Transport; Mon, 20 Jul 2020 13:49:07 -0500
ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Q7xxu1v2lnGDzzNQcJmqW1UEWVjCY9++3KNYTULi6qrC+Xv3jEqV4iTiGdLeYKZVculJJWf256LKHoHjKinX0MoMzxs1jbrBlahwamHizxh+79cOCtJsC/zUiVQxgzSmGuOae+eJinl3R7pN5cTfhwJqPZPNUePRNyw+/b+adrS8lbULTM2HbJALbzsY3FudQi8E/8P/X3t7MxtdqtUjNZvo005ib4lGbj0pMi8KHqiCKEnEtAWPN18IBGJRPYJEy0QgtxMIcrmlQRknJN47QKl9vQpkJerr8DBXYhKf2Q2aL0cVnX8KpEqpJcYWhMZvR4x9a3xYr97/UVLCD/QttQ==
ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=w6yizl9JoqY5Gr6ztoO3IPhe/WeWqornMqizRCcf0Og=; b=TF4fbZRQdxDvQYntPgyeduBqNPRkMNtNV3xU7/ja46HzTcazW7GafDWrnG/L13tROdqSTyfNVKRlzPx6W6nJuyRniaB33/W0eMm+VogqDixORVlcqbK+F4ZGaVPloigRwCt/e/bScEeWY392NMyzFaVMa8eMf+5v2ZCZb1mAv+G+1U/oW3eVFsQ0R2K1UrydV1Xs7dYcuB9dE5KABq2l0XJJOgKceNazUbpNXDuoNctOd6In08TC4jiUBzSADLIuMmh//5YyrVAtjv2XtqHZmrsQEfRfzJBwJy7VcLSV6hIf4+W3tDZZBf9vNe4FIHjJlU93hDKBlkQh3xXghBopuQ==
ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=cisco.com; dmarc=pass action=none header.from=cisco.com; dkim=pass header.d=cisco.com; arc=none
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cisco.onmicrosoft.com; s=selector2-cisco-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=w6yizl9JoqY5Gr6ztoO3IPhe/WeWqornMqizRCcf0Og=; b=mLXdtZowyodva0NZWV2xqG9NBKmAhSUTbAg14kf2HzdBKffAxwprqcv7vsd9+SnRXQAwYPtUlEuWoRSFou+qMNvM5CWoWvHDfp+tFylF5TGOxg7lUAAlY5gcpx6gbPzXoXFiONe16uO/valz7eAVx923h1GreGQhWIdEXfgOAgo=
Received: from BN6PR11MB3875.namprd11.prod.outlook.com (2603:10b6:405:80::37) by BN6PR11MB4164.namprd11.prod.outlook.com (2603:10b6:405:82::11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3195.18; Mon, 20 Jul 2020 18:49:06 +0000
Received: from BN6PR11MB3875.namprd11.prod.outlook.com ([fe80::3076:a505:335e:a8ff]) by BN6PR11MB3875.namprd11.prod.outlook.com ([fe80::3076:a505:335e:a8ff%6]) with mapi id 15.20.3195.025; Mon, 20 Jul 2020 18:49:06 +0000
From: "Reshad Rahman (rrahman)" <rrahman@cisco.com>
To: Erik Auerswald <auerswal@unix-ag.uni-kl.de>
CC: tom petch <ietfc@btconnect.com>, "netmod@ietf.org" <netmod@ietf.org>, Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>, "Nagendra Kumar Nainar (naikumar)" <naikumar@cisco.com>
Thread-Topic: [netmod] rfc6991bis: loopback addresses
Thread-Index: AQHWXHApxk7Hupk8m0u2QlCQJaxtSakQK66AgAAOowCAAFFfgIAABUIA
Date: Mon, 20 Jul 2020 18:49:06 +0000
Message-ID: <34372C4C-72C0-43A7-AC44-F23CD366C4A0@cisco.com>
References: <20200717192556.63e7gfbbrn2qyqzo@anna.jacobs.jacobs-university.de> <AM6PR07MB52220AD16FAC337D4F89A674A07B0@AM6PR07MB5222.eurprd07.prod.outlook.com> <64A58592-5FD0-4752-8069-E59E62C3F699@cisco.com> <20200720143015.GA9358@unix-ag.uni-kl.de>
In-Reply-To: <20200720143015.GA9358@unix-ag.uni-kl.de>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
user-agent: Microsoft-MacOutlook/16.37.20051002
authentication-results: unix-ag.uni-kl.de; dkim=none (message not signed) header.d=none;unix-ag.uni-kl.de; dmarc=none action=none header.from=cisco.com;
x-originating-ip: [142.113.229.50]
x-ms-publictraffictype: Email
x-ms-office365-filtering-correlation-id: 10a695a6-cd04-4bed-5a3c-08d82cdd94ab
x-ms-traffictypediagnostic: BN6PR11MB4164:
x-ms-exchange-transport-forked: True
x-microsoft-antispam-prvs: <BN6PR11MB416463DA3AFF0723790392D8AB7B0@BN6PR11MB4164.namprd11.prod.outlook.com>
x-ms-oob-tlc-oobclassifiers: OLM:8882;
x-ms-exchange-senderadcheck: 1
x-microsoft-antispam: BCL:0;
x-microsoft-antispam-message-info: T/EeLJvVD16OsQoppUhWcukqPtO7sBfMsK/MQUQICaaawiDxhfDPxgvB3qRQD5JP/spIseCvjDRFvSGL5Xk/G7ozISC/VCol1RmgXxqqkZxE//a6UfKqxCN8rfe1gukpQyHG6+XRqrYW69tl4jJMtCYzwR1YSOufrpmg5MEQBABoj0MpTwIQSbh9wMyJtiPx4RtgRxxyL0A+uY+MCHJzi8Eyb8RZPKlPrgBM7PnlBil8clnmxS+0Og++HZxThTksbOtsjuAiS1uwVGYgC68qeFSntWkWYIgo9q4HhDmpd7N4+xwAN7OcPDh/vrWSBlWmBeZ1thc+tTAxoGWmaB9141b9rKj8n0al5sK0R+BYoJibbIw2nbW/Gdq+CqaYYbfsC+bHV8y4bZonzN/6C1qfng==
x-forefront-antispam-report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:BN6PR11MB3875.namprd11.prod.outlook.com; PTR:; CAT:NONE; SFTY:; SFS:(4636009)(396003)(366004)(136003)(39860400002)(376002)(346002)(54906003)(71200400001)(966005)(316002)(186003)(6916009)(91956017)(76116006)(26005)(6506007)(2616005)(478600001)(86362001)(53546011)(2906002)(83080400001)(8936002)(66556008)(6512007)(107886003)(36756003)(66946007)(66476007)(6486002)(64756008)(5660300002)(4326008)(8676002)(66446008)(83380400001)(33656002); DIR:OUT; SFP:1101;
x-ms-exchange-antispam-messagedata: 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
Content-Type: text/plain; charset="utf-8"
Content-ID: <D68379B9B24FCE4095885F600C8E7837@namprd11.prod.outlook.com>
Content-Transfer-Encoding: base64
MIME-Version: 1.0
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-AuthSource: BN6PR11MB3875.namprd11.prod.outlook.com
X-MS-Exchange-CrossTenant-Network-Message-Id: 10a695a6-cd04-4bed-5a3c-08d82cdd94ab
X-MS-Exchange-CrossTenant-originalarrivaltime: 20 Jul 2020 18:49:06.5238 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: 5ae1af62-9505-4097-a69a-c1553ef7840e
X-MS-Exchange-CrossTenant-mailboxtype: HOSTED
X-MS-Exchange-CrossTenant-userprincipalname: w/qxeWLtcrdMt0/pas/jl6ZV547bP1GDJ70sdlV+cFGJ1K7JtkftZCBBi6UBEy1E+M8cEIY3PrK8yVWsDti1gA==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR11MB4164
X-OriginatorOrg: cisco.com
X-Outbound-SMTP-Client: 173.36.7.14, xch-aln-004.cisco.com
X-Outbound-Node: alln-core-1.cisco.com
Archived-At: <https://mailarchive.ietf.org/arch/msg/netmod/w1ffUtmm5_8HjvmBvdA4C4oktT8>
Subject: Re: [netmod] rfc6991bis: loopback addresses
X-BeenThere: netmod@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: NETMOD WG list <netmod.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/netmod>, <mailto:netmod-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/netmod/>
List-Post: <mailto:netmod@ietf.org>
List-Help: <mailto:netmod-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/netmod>, <mailto:netmod-request@ietf.org?subject=subscribe>
X-List-Received-Date: Mon, 20 Jul 2020 18:49:12 -0000

Hi Erik,

You are correct, for IPV6 RFC8029 mentions 0:0:0:0:0:FFFF:7F00:0/104.

Regards,
Reshad.

´╗┐On 2020-07-20, 10:30 AM, "Erik Auerswald" <auerswal@unix-ag.uni-kl.de> wrote:

    Hello Reshad,

    while the I-D draft-nainar-mpls-lsp-ping-yang-00 only specifies ::1/128
    as IPv6 loopback address, RFC 8029 sections 2.1., 3.4.1.1.1., and 4.3.
    specify to use the IPv4 loopback range as IP4-mapped IPv6 addresses for
    IPv6 MPLS echo request UDP packets, not the IPv6 loopback address ::1/128.

    This seems to be inconsistent to me.

    Best regards,
    Erik

    On Mon, Jul 20, 2020 at 01:39:02PM +0000, Reshad Rahman (rrahman) wrote:
    > I don't understand the comment "...implementation choice of one manufacturer."
    > 
    > As for the details, see https://tools.ietf.org/html/draft-nainar-mpls-lsp-ping-yang-00
    > 
    > Regards,
    > Reshad.
    > 
    > 
    > On 2020-07-20, 4:47 AM, "netmod on behalf of tom petch" <netmod-bounces@ietf.org on behalf of ietfc@btconnect.com> wrote:
    > 
    >     I am not a fan of loopback seeing it as the implementation choice of one manufacturer.  On the other hand, the IETF has defined documentation addresses which many if not most writers of examples for YANG modules seem unaware of so if we add anything, I would add those.
    > 
    >     Tom Petch
    > 
    >     From: netmod <netmod-bounces@ietf.org> on behalf of Juergen Schoenwaelder <j.schoenwaelder@jacobs-university.de>
    >     Sent: 17 July 2020 20:25
    > 
    >       - There was a request to add types for loopback addresses
    >         (127.0.0.0/8 and ::1/128).
    > 
    >       - This is related to an effort to define a YANG module for MPLS LSP
    >         Ping (RFC 8029) but the details are unclear, i.e., what is exactly
    >         needed and how such a type will be used and whether there is a
    >         common need for types for loopback addresses.
    > 
    >       - Proposal: do not add such types at this point in time
    > 
    >     --
    >     Juergen Schoenwaelder           Jacobs University Bremen gGmbH
    >     Phone: +49 421 200 3587         Campus Ring 1 | 28759 Bremen | Germany
    >     Fax:   +49 421 200 3103         <https://www.jacobs-university.de/>