Multiple Interfaces and Provisioning Domains Problem Statement
RFC 6418
Document | Type | RFC - Informational (November 2011; Errata) | |
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Authors | Pierrick Seite , Marc Blanchet | ||
Last updated | 2015-10-14 | ||
Replaces | draft-blanchet-mif-problem-statement | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized bibtex | ||
Reviews | |||
Stream | WG state | WG Document | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 6418 (Informational) | |
Action Holders |
(None)
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||
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Jari Arkko | ||
IESG note | The document shepherd is Hui Deng (denghui02@hotmail.com). | ||
Send notices to | (None) |
Internet Engineering Task Force (IETF) M. Blanchet Request for Comments: 6418 Viagenie Category: Informational P. Seite ISSN: 2070-1721 France Telecom - Orange November 2011 Multiple Interfaces and Provisioning Domains Problem Statement Abstract This document describes issues encountered by a node attached to multiple provisioning domains. This node receives configuration information from each of its provisioning domains, where some configuration objects are global to the node and others are local to the interface. Issues such as selecting the wrong interface to send traffic happen when conflicting node-scoped configuration objects are received and inappropriately used. Moreover, other issues are the result of simultaneous attachment to multiple networks, such as domain selection or addressing and naming space overlaps, regardless of the provisioning mechanism. While multiple provisioning domains are typically seen on nodes with multiple interfaces, this document also discusses situations involving single-interface nodes. Status of This Memo This document is not an Internet Standards Track specification; it is published for informational purposes. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Not all documents approved by the IESG are a candidate for any level of Internet Standard; see Section 2 of RFC 5741. Information about the current status of this document, any errata, and how to provide feedback on it may be obtained at http://www.rfc-editor.org/info/rfc6418. Blanchet & Seite Informational [Page 1] RFC 6418 Multiple Interfaces Problem Statement November 2011 Copyright Notice Copyright (c) 2011 IETF Trust and the persons identified as the document authors. All rights reserved. This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (http://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. Table of Contents 1. Introduction ....................................................3 2. Terminology .....................................................4 3. Scope and Existing Work .........................................4 3.1. Interactions Below IP ......................................4 3.2. MIF Node Characterization ..................................5 3.3. Host Requirements ..........................................5 3.4. Mobility and Other IP Protocols ............................6 3.5. Address Selection ..........................................6 3.6. Finding and Sharing IP Addresses with Peers ................7 3.7. Provisioning Domain Selection ..............................7 3.8. Session Management .........................................8 3.9. Sockets API ................................................9 4. MIF Issues ......................................................9 4.1. DNS Resolution Issues ......................................9 4.2. Node Routing ..............................................12 4.3. Conflicting Policies ......................................13 4.4. Session Management ........................................14 4.5. Single Interface on Multiple Provisioning Domains .........14 5. Underlying Problems and Causes .................................15 6. Security Considerations ........................................17 7. Contributors ...................................................18 8. Acknowledgements ...............................................18 9. Informative References .........................................18 Blanchet & Seite Informational [Page 2] RFC 6418 Multiple Interfaces Problem Statement November 2011 1. Introduction A multihomed node may have multiple provisioning domains (via physical and/or virtual interfaces). For example, a node may be simultaneously connected to a wired Ethernet LAN, an 802.11 LAN, a 3G cell network, one or multiple VPN connections, or one or multiple tunnels (automatic or manual). Current laptops and smartphonesShow full document text