IETF Logo Mail Archive

RE: Dumb question about routing headers

Ron Bonica <rbonica@juniper.net> Mon, 25 May 2020 03:54 UTC

Return-Path: <rbonica@juniper.net>
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 3D3543A0AB8 for <ipv6@ietfa.amsl.com>; Sun, 24 May 2020 20:54:30 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -2.1
X-Spam-Level:
X-Spam-Status: No, score=-2.1 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001] autolearn=ham autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=juniper.net header.b=Ct2tk1oM; dkim=pass (1024-bit key) header.d=juniper.net header.b=Ig1lL4r9
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 iB6XrOoMiNID for <ipv6@ietfa.amsl.com>; Sun, 24 May 2020 20:54:28 -0700 (PDT)
Received: from mx0b-00273201.pphosted.com (mx0b-00273201.pphosted.com [67.231.152.164]) (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 768753A0ABD for <ipv6@ietf.org>; Sun, 24 May 2020 20:54:28 -0700 (PDT)
Received: from pps.filterd (m0108161.ppops.net [127.0.0.1]) by mx0b-00273201.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 04P3qO3b006167; Sun, 24 May 2020 20:54:27 -0700
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=juniper.net; h=from : to : subject : date : message-id : references : in-reply-to : content-type : content-transfer-encoding : mime-version; s=PPS1017; bh=A2w2Uu5dTi1PMfmNaE13vGoDi6dqBbbi64HLcsY8sr4=; b=Ct2tk1oMuzQQzm4c5tYG+yJbHaDD046Nh1YH0hNenCbnTIpjw1J5Hzg+IYt3wyMeNyXS Ih+fvO+IUPXIZwHyMk/MvbKvb3jybwRf+uWwl7PeloDS2QIiKlejECa3oknMsVu3yW2H jfo251LPSTywpaU5uNMRVSSmphZPIgcrTjXvBsexirlrpDWraSLlxmAqxl2Z2aBnuUY/ 0WTHoP75PEHW1yBiOLGxs1E0IZoKv623LkFWJTd8vp61B9jOIyPaFRTMopEB9rzkwKnU v4Zo8EmKNIJvkgJfUXZJoPCGRBqBwesCK1QNlOC9Uz90BcPGsZzHZHb7m3TNWIW2aYa3 xQ==
Received: from nam10-mw2-obe.outbound.protection.outlook.com (mail-mw2nam10lp2104.outbound.protection.outlook.com [104.47.55.104]) by mx0b-00273201.pphosted.com with ESMTP id 3172xyhypc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sun, 24 May 2020 20:54:26 -0700
ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Khuf1oequ2yBV/R9ollfnHp+DZqA+dYcNavtv20JzCMRGSbevIlgDJvQFCLtvyYm/BALD5OZS1iBDCgAgyi/FKH1AK0xCI/IGgc5K2YIWArnwCHc4UC9TVAs9sDnYWvKBWIU7rYwn4YOEe/wOj2FRnmfsv9ubIDkVzFa6Km9b8LEikRZWStMlpBO8ovrI5jLVSUQ13lU2vahR+y++8TmecidiVxcyoOBX6+10MY3ZbslTTGPvypP7/cPqurZKqmGIZf2pdO955C5QSL0+XcCeVcJ1P2dYwnXKYOF6NkdB95tHQfIufvdsFKMFW/vZmmqxDpQp7jlaenB1t0TPgwVbQ==
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=A2w2Uu5dTi1PMfmNaE13vGoDi6dqBbbi64HLcsY8sr4=; b=etz/Fx4SKiKR07HnbVuC8iP5TZ5LtwRaC8blKSPRsQgfWZnTBUalbuUQhT2l0uZmxeu/wMHSIKgnUTpRQR8dnOJ6d7G2j+tToOqjYmD4OWl16MrzvUfbU3k22rCD/6HDYCltrfnFhlIy+t7xjzmfpxhYZp2DiDzAky0AnfSE5sY9E+LE2c2/10MDnsiYUw5GSPDoBMnPoJGm1FEzeUHhA6p4UUqNDxLsxdAADij84jFU5tHj0pxADpsAz2U7PEpImUv7fVzWoyC3wXpTyHWq4fSlkBVQ5DVg99hAC9/8cpO49PG3/lm4t0B9zv/4v2sKUmYnMOiUJX6K9nKqNgkFcA==
ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=juniper.net; dmarc=pass action=none header.from=juniper.net; dkim=pass header.d=juniper.net; arc=none
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=juniper.net; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=A2w2Uu5dTi1PMfmNaE13vGoDi6dqBbbi64HLcsY8sr4=; b=Ig1lL4r9CWdNC96VMJcFa1pqQTE3VHwHkNlzGUi/p8vZDcbDpiIo2ZcaRH+cpYunA6bXDGxhp2hxZZd4EVR3zWnj3VUhJh8AbpDMj7UdFV1Mfk/tVJYhMhUBcC+HM6mF8XxA7c8KQYq/PrQK7pzWCFpNwLuDSdBYMhRd7MuG+c0=
Received: from DM6PR05MB6348.namprd05.prod.outlook.com (2603:10b6:5:122::15) by DM6PR05MB5612.namprd05.prod.outlook.com (2603:10b6:5:c::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3045.9; Mon, 25 May 2020 03:54:23 +0000
Received: from DM6PR05MB6348.namprd05.prod.outlook.com ([fe80::c020:3bf5:7230:75e3]) by DM6PR05MB6348.namprd05.prod.outlook.com ([fe80::c020:3bf5:7230:75e3%4]) with mapi id 15.20.3045.014; Mon, 25 May 2020 03:54:23 +0000
From: Ron Bonica <rbonica@juniper.net>
To: Brian E Carpenter <brian.e.carpenter@gmail.com>, 6man <ipv6@ietf.org>
Subject: RE: Dumb question about routing headers
Thread-Topic: Dumb question about routing headers
Thread-Index: AQHWMg8Z2v4s/pQT+kis0flaeCgFI6i4K51A
Date: Mon, 25 May 2020 03:54:23 +0000
Message-ID: <DM6PR05MB634819F2ED609AD0267A92AFAEB30@DM6PR05MB6348.namprd05.prod.outlook.com>
References: <4cf28892-12a9-7376-c378-4af46f7002c2@gmail.com>
In-Reply-To: <4cf28892-12a9-7376-c378-4af46f7002c2@gmail.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
msip_labels: MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_Enabled=true; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_SetDate=2020-05-25T03:54:18Z; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_Method=Standard; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_Name=0633b888-ae0d-4341-a75f-06e04137d755; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_SiteId=bea78b3c-4cdb-4130-854a-1d193232e5f4; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_ActionId=ac7b081f-1777-4ceb-9e95-ab40b9c26c6d; MSIP_Label_0633b888-ae0d-4341-a75f-06e04137d755_ContentBits=2
dlp-product: dlpe-windows
dlp-version: 11.4.0.45
dlp-reaction: no-action
authentication-results: gmail.com; dkim=none (message not signed) header.d=none;gmail.com; dmarc=none action=none header.from=juniper.net;
x-originating-ip: [108.28.233.91]
x-ms-publictraffictype: Email
x-ms-office365-filtering-ht: Tenant
x-ms-office365-filtering-correlation-id: abcc0efe-fe7c-4b65-17ef-08d8005f4ff4
x-ms-traffictypediagnostic: DM6PR05MB5612:
x-microsoft-antispam-prvs: <DM6PR05MB5612D330E3AC59E932E50CD4AEB30@DM6PR05MB5612.namprd05.prod.outlook.com>
x-ms-oob-tlc-oobclassifiers: OLM:2733;
x-forefront-prvs: 0414DF926F
x-ms-exchange-senderadcheck: 1
x-microsoft-antispam: BCL:0;
x-microsoft-antispam-message-info: KeqGiuAwNyl3LwFjvH0lAqD5Qki9XdihKy9WjHswTsvhGJH6GEwWLtDK9UM4In+LpNpnWhOxQejEtlHFO1759p2O2DuGXpaS51L0EC+5SjQCSMndqRDrREfOzRN+CJW5ldYo8IyP7SwXvq5IHWlqRm8AagnRStPyfp4pVGGqspoL6YV4Hy500qxt7e3H7uA8br3zK8N/89AmkJ+LuYkmMsbsUWGCE8ec0RfkqirLfsPdDALdouiTz/OF7byn7adN/uOgnJjb59jWjShLnHWVINLaLwvrbt98+M7MdlNtdvpWqe3PNJPbfsEgnBgl9iSAEmDdFZ29v6TL+yD6YJDUPdBpQdQC5pYZtmkQhb6mmsnmTO7Rvbon6ADk7Pt5tNNMfmiKTXs/PklZ/WpDoc/s7g==
x-forefront-antispam-report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:DM6PR05MB6348.namprd05.prod.outlook.com; PTR:; CAT:NONE; SFTY:; SFS:(4636009)(376002)(366004)(346002)(39860400002)(396003)(136003)(66446008)(316002)(76116006)(66946007)(55016002)(66556008)(26005)(9686003)(66476007)(64756008)(4744005)(71200400001)(2906002)(186003)(5660300002)(86362001)(966005)(478600001)(7696005)(52536014)(6506007)(53546011)(8676002)(110136005)(8936002)(33656002); DIR:OUT; SFP:1102;
x-ms-exchange-antispam-messagedata: vxgwKGJr03hzxJZHN9gehgACBVDbpE5zWek+4wbs+jGZHFMQieW2xXgRU8Dshb8/inLjsdAR/UCrIOmH8I6gQBkM9n3eC4iKmOBX0VdNEZIg0yjyay2ABIBCwyOr5SFK1JhXtRVDTyKjhj2hHWj1UZotP0+4LuHOm8QQdfFMc/aJmE7awYm9x4XuanUz+wVro6CBwLsf5ZMiME5SOrtTzVQ0cxyuJ0IiJznjQ/NAEo4ySvs/fq/l909V/s/BEIMcgqGKQUMo0gLy9dNV8WBBuzUFyh0uWC0N0SOCEPzP9ce2wtqePM4taRaA+odBS7Ay2Rx/EqgJCWgTuAcQyksGG7WmyYF0j5TieWcX9g7SDWDL0GmbF/HF7Tj7e3capScJ4amX92Imvv1mFhWZvC4b9F6sCqvZm5sP6BSm8w2VCFLEObURhs4OYOQZnpFnCxhDGjR5PE6lbrZH1TS568Zuu1PTyfGd2eURgbQAzmw5OlA=
x-ms-exchange-transport-forked: True
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
MIME-Version: 1.0
X-OriginatorOrg: juniper.net
X-MS-Exchange-CrossTenant-Network-Message-Id: abcc0efe-fe7c-4b65-17ef-08d8005f4ff4
X-MS-Exchange-CrossTenant-originalarrivaltime: 25 May 2020 03:54:23.4955 (UTC)
X-MS-Exchange-CrossTenant-fromentityheader: Hosted
X-MS-Exchange-CrossTenant-id: bea78b3c-4cdb-4130-854a-1d193232e5f4
X-MS-Exchange-CrossTenant-mailboxtype: HOSTED
X-MS-Exchange-CrossTenant-userprincipalname: kbv3DWV8FfmitRme2aZgHdfoVTWafCwcI7Dxp33sA+wvn4+WDvz3BoDeCDg/XsWm5ZIUkzasApjHRO+JuW9MlA==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR05MB5612
X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.216, 18.0.676 definitions=2020-05-24_11:2020-05-22, 2020-05-24 signatures=0
X-Proofpoint-Spam-Details: rule=outbound_spam_notspam policy=outbound_spam score=0 spamscore=0 impostorscore=0 mlxlogscore=999 suspectscore=0 lowpriorityscore=0 priorityscore=1501 adultscore=0 phishscore=0 bulkscore=0 cotscore=-2147483648 clxscore=1015 mlxscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2005250029
Archived-At: <https://mailarchive.ietf.org/arch/msg/ipv6/_xpkcuJpNwVie4wJvI8b23Ac6cM>
X-BeenThere: ipv6@ietf.org
X-Mailman-Version: 2.1.29
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: Mon, 25 May 2020 03:54:30 -0000

Brian,

There is no rule against it, but we should probably consider the security implications.

                                                         Ron



Juniper Business Use Only

-----Original Message-----
From: ipv6 <ipv6-bounces@ietf.org> On Behalf Of Brian E Carpenter
Sent: Sunday, May 24, 2020 5:05 PM
To: 6man <ipv6@ietf.org>
Subject: Dumb question about routing headers

[External Email. Be cautious of content]


Is a routing header whose final destination is a multicast address, but whose previous segments are all unicast, valid?

Regards
   Brian Carpenter

--------------------------------------------------------------------
IETF IPv6 working group mailing list
ipv6@ietf.org
Administrative Requests: https://urldefense.com/v3/__https://www.ietf.org/mailman/listinfo/ipv6__;!!NEt6yMaO-gk!QeWLbL5s0LLasFjI9iCBUxk0DXwOMFEdQ5TehtsEPWB_zL_pz71UXxDaJPI5j8dE$
--------------------------------------------------------------------

v2.23.0 | Report a Bug | By Email