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+Internet Engineering Task Force (IETF)                          R. Droms
+Request for Comments: 7973
+Category: Informational                                         P. Duffy
+ISSN: 2070-1721                                                    Cisco
+                                                           November 2016
+
+
+                Assignment of an Ethertype for IPv6 with
+    Low-Power Wireless Personal Area Network (LoWPAN) Encapsulation
+
+Abstract
+
+   When carried over Layer 2 technologies such as Ethernet, IPv6
+   datagrams using Low-Power Wireless Personal Area Network (LoWPAN)
+   encapsulation as defined in RFC 4944 must be identified so the
+   receiver can correctly interpret the encoded IPv6 datagram.  The IETF
+   officially requested the assignment of an Ethertype for that purpose
+   and this document reports that assignment.
+
+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 7841.
+
+   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/rfc7973.
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+Droms & Duffy                 Informational                     [Page 1]
+
+RFC 7973           Ethertype for LoWPAN Encapsulation      November 2016
+
+
+Copyright Notice
+
+   Copyright (c) 2016 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  . . . . . . . . . . . . . . . . . . . . . . . .   2
+   2.  Assignment of an Ethertype by IEEE  . . . . . . . . . . . . .   3
+   3.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   3
+   4.  Security Considerations . . . . . . . . . . . . . . . . . . .   3
+   5.  Normative References  . . . . . . . . . . . . . . . . . . . .   3
+   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   4
+
+1.  Introduction
+
+   The IETF defined "LoWPAN encapsulation", a format for IPv6 [RFC2460]
+   datagram encapsulation [RFC4944].  This document regards any IPv6
+   datagram using the Dispatch octet as defined in Section 5.1 of RFC
+   4944 as using LoWPAN encapsulation.  LoWPAN encapsulation as defined
+   in RFC 4944 has been updated by [RFC6282], and may be extended and
+   modified by future IETF Standards.  The intended Layer 2 technology
+   for IPv6 datagrams using LoWPAN encapsulation as originally defined
+   is [IEEE.802.15.4_2011], which does not provide for a protocol switch
+   in its Layer 2 headers.
+
+   The following list gives some example use cases for the Ethertype-
+   based protocol dispatch for the LoWPAN-encapsulated IPv6 datagram:
+
+   o  Usage of LoWPAN encapsulation in conjunction with IEEE 802.15.9
+      Multiplexed Data Service [IEEE802159], which provides the ability
+      to perform upper layer protocol dispatch for IEEE 802.15.4
+      networks.  Wi-SUN Alliance intends to use the 15.9 Multiplexed
+      Data Information Element for upper layer protocol dispatch.  As
+      specified in IEEE 802.15.9, dispatch of LoWPAN encapsulation
+      frames will require that an Ethertype be assigned for LoWPAN
+      encapsulation.
+
+
+
+
+Droms & Duffy                 Informational                     [Page 2]
+
+RFC 7973           Ethertype for LoWPAN Encapsulation      November 2016
+
+
+   o  LoWPAN encapsulation will likely be needed for Wi-Fi Alliance's
+      HaLoW [HALOW] standard (low-power operation in the 900 MHz band).
+
+   o  Other Layer 2 technologies such as Ethernet and debugging tools
+      such as Wireshark require a unique Protocol Type field for LoWPAN
+      encapsulation to properly interpret IPv6 datagrams that use LoWPAN
+      encapsulation.
+
+   o  Any existing or future Layer 2 technology, incorporating
+      Ethertype-based upper layer dispatch, can use the Ethertype
+      proposed in this document to dispatch LoWPAN-encapsulated IPv6
+      datagrams.
+
+2.  Assignment of an Ethertype by IEEE
+
+   The IETF formally submitted a request to IEEE for assignment of an
+   Ethertype for IPv6 datagrams using LoWPAN encapsulation.  IEEE has
+   responded with the assignment of Ethertype 0xA0ED for this purpose.
+   The assignment has been recorded by IEEE [IEEE-ETHERTYPES].
+
+3.  IANA Considerations
+
+   The following entry has been added to the "ETHER TYPES" subregistry
+   of the "IEEE 802 Numbers" registry [IANA-IEEE802]:
+
+      Ethertype (decimal): 41197
+      Ethertype (hex): A0ED
+      Exp. Ethernet (decimal): -
+      Exp. Ethernet (octal): -
+      Description: LoWPAN encapsulation
+      References: RFC 7973 (this document)
+
+4.  Security Considerations
+
+   This document only requests assignment of an Ethertype for IPv6
+   datagrams using LoWPAN encapsulation.  It has no incremental
+   implications for security beyond those in the relevant protocols.
+
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+Droms & Duffy                 Informational                     [Page 3]
+
+RFC 7973           Ethertype for LoWPAN Encapsulation      November 2016
+
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+5.  Normative References
+
+   [HALOW]    Wi-Fi Alliance, "Wi-Fi HaLow",
+              <http://www.wi-fi.org/discover-wi-fi/wi-fi-halow>.
+
+   [IANA-IEEE802]
+              IANA, "IEEE 802 Numbers",
+              <http://www.iana.org/assignments/ieee-802-numbers>.
+
+   [IEEE-ETHERTYPES]
+              IEEE, "Ethertype",
+              <http://standards-oui.ieee.org/ethertype/eth.txt>.
+
+   [IEEE.802.15.4_2011]
+              IEEE, "IEEE Standard for Local and metropolitan area
+              networks--Part 15.4: Low-Rate Wireless Personal Area
+              Networks (LR-WPANs)", IEEE 802.15.4-2011,
+              DOI 10.1109/ieeestd.2011.6012487, September 2011,
+              <http://ieeexplore.ieee.org/servlet/
+              opac?punumber=6012485>.
+
+   [IEEE802159]
+              IEEE, "IEEE Draft Recommended Practice for Transport of
+              Key Management Protocol (KMP) Datagrams",
+              IEEE P802.15.9/D04, May 2015,
+              <http://ieeexplore.ieee.org/xpl/
+              articleDetails.jsp?arnumber=7272753>.
+
+   [RFC2460]  Deering, S. and R. Hinden, "Internet Protocol, Version 6
+              (IPv6) Specification", RFC 2460, DOI 10.17487/RFC2460,
+              December 1998, <http://www.rfc-editor.org/info/rfc2460>.
+
+   [RFC4944]  Montenegro, G., Kushalnagar, N., Hui, J., and D. Culler,
+              "Transmission of IPv6 Packets over IEEE 802.15.4
+              Networks", RFC 4944, DOI 10.17487/RFC4944, September 2007,
+              <http://www.rfc-editor.org/info/rfc4944>.
+
+   [RFC6282]  Hui, J., Ed. and P. Thubert, "Compression Format for IPv6
+              Datagrams over IEEE 802.15.4-Based Networks", RFC 6282,
+              DOI 10.17487/RFC6282, September 2011,
+              <http://www.rfc-editor.org/info/rfc6282>.
+
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+Droms & Duffy                 Informational                     [Page 4]
+
+RFC 7973           Ethertype for LoWPAN Encapsulation      November 2016
+
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+Authors' Addresses
+
+   Ralph Droms
+
+   Email: rdroms.ietf@gmail.com
+
+
+   Paul Duffy
+   Cisco
+   1414 Massachusetts Ave.
+   Boxborough, Massachusetts  01719
+   United States of America
+
+   Phone: +1 978 204 9993
+   Email: paduffy@cisco.com
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