Transmission of IPv6 Packets over Near Field Communication
draft-ietf-6lo-nfc-17
| Document | Type | Active Internet-Draft (6lo WG) | |
|---|---|---|---|
| Authors | Younghwan Choi , Yong-Geun Hong , Joo-Sang Youn , Dongkyun Kim , JinHyeock Choi | ||
| Last updated | 2020-08-23 | ||
| Replaces | draft-hong-6lo-ipv6-over-nfc | ||
| Stream | Internet Engineering Task Force (IETF) | ||
| Intended RFC status | Proposed Standard | ||
| Formats | plain text xml pdf htmlized bibtex | ||
| Reviews | |||
| Stream | WG state | Submitted to IESG for Publication | |
| Document shepherd | Carles Gomez | ||
| Shepherd write-up | Show (last changed 2019-03-05) | ||
| IESG | IESG state | IESG Evaluation::AD Followup | |
| Action Holders |
(None)
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| Consensus Boilerplate | Yes | ||
| Telechat date |
Needs a YES. Has a DISCUSS. Needs 8 more YES or NO OBJECTION positions to pass. |
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| Responsible AD | Erik Kline | ||
| Send notices to | Samita Chakrabarti <samitac.ietf@gmail.com>, Carles Gomez <carlesgo@entel.upc.edu> | ||
| IANA | IANA review state | Version Changed - Review Needed | |
6Lo Working Group Y. Choi, Ed.
Internet-Draft Y-G. Hong
Intended status: Standards Track ETRI
Expires: February 24, 2021 J-S. Youn
Dongeui Univ
D-K. Kim
KNU
J-H. Choi
Samsung Electronics Co.,
August 23, 2020
Transmission of IPv6 Packets over Near Field Communication
draft-ietf-6lo-nfc-17
Abstract
Near Field Communication (NFC) is a set of standards for smartphones
and portable devices to establish radio communication with each other
by touching them together or bringing them into proximity, usually no
more than 10 cm apart. NFC standards cover communications protocols
and data exchange formats, and are based on existing radio-frequency
identification (RFID) standards including ISO/IEC 14443 and FeliCa.
The standards include ISO/IEC 18092 and those defined by the NFC
Forum. The NFC technology has been widely implemented and available
in mobile phones, laptop computers, and many other devices. This
document describes how IPv6 is transmitted over NFC using 6LoWPAN
techniques.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
This Internet-Draft will expire on February 24, 2021.
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Copyright Notice
Copyright (c) 2020 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
(https://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. Conventions and Terminology . . . . . . . . . . . . . . . . . 3
3. Overview of Near Field Communication Technology . . . . . . . 3
3.1. Peer-to-peer Mode of NFC . . . . . . . . . . . . . . . . 3
3.2. Protocol Stack of NFC . . . . . . . . . . . . . . . . . . 4
3.3. NFC-enabled Device Addressing . . . . . . . . . . . . . . 5
3.4. MTU of NFC Link Layer . . . . . . . . . . . . . . . . . . 5
4. Specification of IPv6 over NFC . . . . . . . . . . . . . . . 6
4.1. Protocol Stack . . . . . . . . . . . . . . . . . . . . . 6
4.2. Stateless Address Autoconfiguration . . . . . . . . . . . 7
4.3. IPv6 Link-Local Address . . . . . . . . . . . . . . . . . 8
4.4. Neighbor Discovery . . . . . . . . . . . . . . . . . . . 8
4.5. Dispatch Header . . . . . . . . . . . . . . . . . . . . . 9
4.6. Header Compression . . . . . . . . . . . . . . . . . . . 9
4.7. Fragmentation and Reassembly Considerations . . . . . . . 10
4.8. Unicast and Multicast Address Mapping . . . . . . . . . . 10
5. Internet Connectivity Scenarios . . . . . . . . . . . . . . . 11
5.1. NFC-enabled Device Network Connected to the Internet . . 11
5.2. Isolated NFC-enabled Device Network . . . . . . . . . . . 12
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 12
7. Security Considerations . . . . . . . . . . . . . . . . . . . 12
8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 13
9. Normative References . . . . . . . . . . . . . . . . . . . . 13
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 14
1. Introduction
NFC is a set of short-range wireless technologies, typically
requiring a distance between sender and receiver of 10 cm or less.
NFC operates at 13.56 MHz, and at rates ranging from 106 kbit/s to
424 kbit/s, as per the ISO/IEC 18000-3 air interface [ECMA-340]. NFC
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builds upon RFID systems by allowing two-way communication between
endpoints. NFC always involves an initiator and a target; the
initiator actively generates an RF field that can power a passive
target. This enables NFC targets to take very simple form factors,
such as tags, stickers, key fobs, or cards, while avoiding the need
for batteries. NFC peer-to-peer communication is possible, provided
that both devices are powered. As of the writing, NFC is supported
by the main smartphone operating systems.
NFC is often regarded as a secure communications technology, due to
its very short transmission range.
In order to benefit from Internet connectivity, it is desirable for
NFC-enabled devices to support IPv6, considering its large address
space, along with tools for unattended operation, among other
advantages. This document specifies how IPv6 is supported over NFC
by using IPv6 over Low-power Wireless Personal Area Network (6LoWPAN)
techniques [RFC4944], [RFC6282], [RFC6775]. 6LoWPAN is suitable,
considering that it was designed to support IPv6 over IEEE 802.15.4
networks, and some of the characteristics of the latter are similar
to those of NFC.
2. Conventions and Terminology
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
"OPTIONAL" in this document are to be interpreted as described in BCP
14 [RFC2119] [RFC8174] when, and only when, they appear in all
capitals, as shown here.
3. Overview of Near Field Communication Technology
This section presents an overview of NFC, focusing on the
characteristics of NFC that are most relevant for supporting IPv6.
NFC enables simple, two-way, interaction between two devices,
allowing users to perform contactless transactions, access digital
content, and connect electronic devices with a single touch. NFC
utilizes key elements in existing standards for contactless card
Technology, such as ISO/IEC 14443 A&B and JIS-X 6319-4. NFC allows
devices to share information at a distance up to 10 cm with a maximum
physical layer bit rate of 424 kbps.
3.1. Peer-to-peer Mode of NFC
NFC defines three modes of operation: card emulation, peer-to-peer,
and reader/writer. Only the peer-to-peer mode allows two NFC-enabled
devices to communicate with each other to exchange information
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bidirectionally. The other two modes do not support two-way
communications between two devices. Therefore, the peer-to-peer mode
is used for IPv6 over NFC.
3.2. Protocol Stack of NFC
NFC defines a protocol stack for the peer-to-peer mode (Figure 1).
The peer-to-peer mode is offered by the Activities Digital Protocol
at the NFC Physical Layer. The NFC Logical Link Layer comprises the
Logical Link Control Protocol (LLCP), and when IPv6 is used over NFC,
it also includes an IPv6-LLCP Binding. IPv6 and its underlying
adaptation Layer (i.e., IPv6-over-NFC adaptation layer) are placed
directly on the top of the IPv6-LLCP Binding. An IPv6 datagram is
transmitted by the Logical Link Control Protocol (LLCP) with
reliable, two-way transmission of information between the peer
devices.
+----------------------------------------+ - - - - - - - - -
| IPv6 - LLCP | .
| Binding | .
+----------------------------------------+ NFC
| | Logical Link
| Logical Link Control Protocol | Layer
| (LLCP) | .
| | .
+----------------------------------------+ - - - - - - - - -
| | .
| Activities | .
| Digital Protocol | .
| | NFC Physical
+----------------------------------------+ Layer
| | .
| RF Analog | .
| | .
+----------------------------------------+ - - - - - - - - -
Figure 1: Protocol Stack of NFC
The LLCP consists of Logical Link Control (LLC) and MAC Mapping. The
MAC Mapping integrates an existing RF protocol into the LLCP
architecture. The LLC contains three components, such as Link
Management, Connection-oriented Transmission, and Connectionless
Transmission. The Link Management component is responsible for
serializing all connection-oriented and connectionless LLC PDU
(Protocol Data Unit) exchanges and for aggregation and disaggregation
of small PDUs. The Connection-oriented Transmission component is
responsible for maintaining all connection-oriented data exchanges
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including connection set-up and termination. The Connectionless
Transmission component is responsible for handling unacknowledged
data exchanges.
In order to send an IPv6 packet over NFC, the packet MUST be passed
down to the LLCP layer of NFC and carried by an Information Field in
an LLCP Protocol Data Unit (I PDU). The LLCP does not support
fragmentation and reassembly. For IPv6 addressing or address
configuration, the LLCP MUST provide related information, such as
link layer addresses, to its upper layer. The LLCP to IPv6 protocol
binding MUST transfer the Source Service Access Point (SSAP) and
Destination Service Access Point (DSAP) value to the IPv6 over NFC
protocol. SSAP is a Logical Link Control (LLC) address of the source
NFC-enabled device with a size of 6 bits, while DSAP means an LLC
address of the destination NFC-enabled device. Thus, SSAP is a
source address, and DSAP is a destination address.
3.3. NFC-enabled Device Addressing
According to NFC LLCP v1.3 [LLCP-1.3], NFC-enabled devices have two
types of 6-bit addresses (i.e., SSAP and DSAP) to identify service
access points. Several service access points can be installed on a
NFC device. However, the SSAP and DSAP can be used as identifiers
for NFC link connections with the IPv6 over NFC adaptation layer.
Therefore, the SSAP can be used to generate an IPv6 interface
identifier. Address values between 00h and 0Fh of SSAP and DSAP are
reserved for identifying the well-known service access points, which
are defined in the NFC Forum Assigned Numbers Register. Address
values between 10h and 1Fh are assigned by the local LLC to services
registered by local service environment. In addition, address values
between 20h and 3Fh are assigned by the local LLC as a result of an
upper layer service request. Therefore, the address values between
20h and 3Fh can be used for generating IPv6 interface identifiers.
3.4. MTU of NFC Link Layer
As mentioned in Section 3.2, when an IPv6 packet is transmitted, the
packet MUST be passed down to LLCP of NFC and transported to an I PDU
of LLCP of the NFC-enabled peer device.
The information field of an I PDU contains a single service data
unit. The maximum number of octets in the information field is
determined by the Maximum Information Unit (MIU) for the data link
connection. The default value of the MIU for I PDUs is 128 octets.
The local and remote LLCs each establish and maintain distinct MIU
values for each data link connection endpoint. Also, an LLC may
announce a larger MIU for a data link connection by transmitting an
optional Maximum Information Unit Extension (MIUX) parameter within
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the information field. If no MIUX parameter is transmitted, the MIU
value is 128 bytes. Otherwise, the MTU size in NFC LLCP MUST be
calculated from the MIU value as follows:
MTU = MIU = 128 + MIUX.
According to [LLCP-1.3], Figure 2 shows an example of the MIUX
parameter TLV. The Type and Length fields of the MIUX parameter TLV
have each a size of 1 byte. The size of the TLV Value field is 2
bytes.
0 0 1 2 3
0 8 6 2 1
+----------+----------+------+-----------+
| Type | Length | Value |
+----------+----------+------+-----------+
| 00000010 | 00000010 | 1011 | 0x0~0x7FF |
+----------+----------+------+-----------+
Figure 2: Example of MIUX Parameter TLV
When the MIUX parameter is used, the TLV Type field MUST be 0x02 and
the TLV Length field MUST be 0x02. The MIUX parameter MUST be
encoded into the least significant 11 bits of the TLV Value field.
The unused bits in the TLV Value field MUST be set to zero by the
sender and ignored by the receiver. The maximum possible value of
the TLV Value field is 0x7FF, and the maximum size of the LLCP MTU is
2175 bytes. The MIUX value MUST be 0x480 to support the IPv6 MTU
requirement (of 1280 bytes).
4. Specification of IPv6 over NFC
NFC technology has requirements owing to low power consumption and
allowed protocol overhead. 6LoWPAN standards [RFC4944], [RFC6775],
and [RFC6282] provide useful functionality for reducing the overhead
of IPv6 over NFC. This functionality consists of link-local IPv6
addresses and stateless IPv6 address auto-configuration (see
Section 4.2 and Section 4.3), Neighbor Discovery (see Section 4.4)
and header compression (see Section 4.6).
4.1. Protocol Stack
Figure 3 illustrates the IPv6 over NFC protocol stack. Upper layer
protocols can be transport layer protocols (e.g., TCP and UDP),
application layer protocols, and others capable of running on top of
IPv6.
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+----------------------------------------+
| Upper Layer Protocols |
+----------------------------------------+
| IPv6 |
+----------------------------------------+
| Adaptation Layer for IPv6 over NFC |
+----------------------------------------+
| NFC Logical Link Layer |
+----------------------------------------+
| NFC Physical Layer |
+----------------------------------------+
Figure 3: Protocol Stack for IPv6 over NFC
The adaptation layer for IPv6 over NFC supports neighbor discovery,
stateless address auto-configuration, header compression, and
fragmentation & reassembly, based on 6LoWPAN.
4.2. Stateless Address Autoconfiguration
An NFC-enabled device performs stateless address autoconfiguration as
per [RFC4862]. A 64-bit Interface identifier (IID) for an NFC
interface is formed by utilizing the 6-bit NFC SSAP (see
Section 3.3). In the viewpoint of address configuration, such an IID
should guarantee a stable IPv6 address during the course of a single
connection, because each data link connection is uniquely identified
by the pair of DSAP and SSAP included in the header of each LLC PDU
in NFC.
Following the guidance of [RFC7136], interface identifiers of all
unicast addresses for NFC-enabled devices are 64 bits long and
constructed by using the generation algorithm of random (but stable)
identifier (RID) [RFC7217] (see Figure 4).
0 1 3 4 6
0 6 2 8 3
+---------+---------+---------+---------+
| Random (but stable) Identifier (RID) |
+---------+---------+---------+---------+
Figure 4: IID from NFC-enabled device
The RID is an output which is created by the F() algorithm with input
parameters. One of the parameters is Net_Iface, and NFC Link Layer
address (i.e., SSAP) is a source of the Net_Iface parameter. The
6-bit address of SSAP of NFC is short and easy to be targeted by
attacks of third party (e.g., address scanning). The F() algorithm
can provide secured and stable IIDs for NFC-enabled devices. In
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addition, an optional parameter, Network_ID is used to increase the
randomness of the generated IID.
4.3. IPv6 Link-Local Address
The IPv6 link-local address for an NFC-enabled device is formed by
appending the IID to the prefix FE80::/64, as depicted in Figure 5.
0 0 0 1
0 1 6 2
0 0 4 7
+----------+------------------+----------------------------+
|1111111010| zeros | Interface Identifier |
+----------+------------------+----------------------------+
. .
. <- - - - - - - - - - - 128 bits - - - - - - - - - - - -> .
. .
Figure 5: IPv6 link-local address in NFC
A 6LBR may obtain an IPv6 prefix for numbering the NFC network via
DHCPv6 Prefix Delegation ([RFC3633]). The "Interface Identifier" can
be a secured and stable IID.
4.4. Neighbor Discovery
Neighbor Discovery Optimization for 6LoWPANs ([RFC6775]) describes
the neighbor discovery approach in several 6LoWPAN topologies, such
as mesh topology. NFC supports mesh topologies but most of all
applications would use a simple multi-hop network topology or
directly connected peer-to-peer network because NFC RF range is very
short.
o When an NFC-enabled 6LN is directly connected to an NFC-enabled
6LBR, the NFC 6LN MUST register its address with the 6LBR by
sending a Neighbor Solicitation (NS) message with the Extended
Address Registration Option (EARO) [RFC8505], and process the
Neighbor Advertisement (NA) accordingly. In addition, when the
6LN and 6LBR are directly connected, DHCPv6 is used for address
assignment. Therefore, Duplicate Address Detection (DAD) is not
necessary between them.
o When two or more NFC devices are connected, there are two cases.
One is that three or more NFC devices are linked with multi-hop
connections, and the other is that they meet within a single hop
range. Two NFC devices might still talk to each other (point-to-
point topology), but one of them may be connected to the Internet.
In a case of multi-hop topology, devices which have two or more
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connections with neighbor devices, may act as routers. In a case
that they meet within a single hop and they have the same
properties, any of them can be a router.
o For sending Router Solicitations and processing Router
Advertisements, the NFC 6LNs MUST follow Sections 5.3 and 5.4 of
[RFC6775].
o When a NFC device is a 6LR or a 6LBR, the NFC device MUST follow
Section 6 and 7 of [RFC6775].
4.5. Dispatch Header
All IPv6-over-NFC encapsulated datagrams are prefixed by an
encapsulation header stack consisting of a Dispatch value. The only
sequence currently defined for IPv6-over-NFC is the LOWPAN_IPHC
compressed IPv6 header (see Section 4.6) header followed by payload,
as depicted in Figure 6.
+---------------+---------------+--------------+
| IPHC Dispatch | IPHC Header | Payload |
+---------------+---------------+--------------+
Figure 6: A IPv6-over-NFC Encapsulated 6LOWPAN_IPHC Compressed IPv6
Datagram
The dispatch value is treated as an unstructured namespace. Only a
single pattern is used to represent current IPv6-over-NFC
functionality.
+------------+--------------------+-----------+
| Pattern | Header Type | Reference |
+------------+--------------------+-----------+
| 01 1xxxxx | 6LOWPAN_IPHC | [RFC6282] |
+------------+--------------------+-----------+
Figure 7: Dispatch Values
Other IANA-assigned 6LoWPAN Dispatch values do not apply to this
specification.
4.6. Header Compression
Header compression as defined in [RFC6282], which specifies the
compression format for IPv6 datagrams on top of IEEE 802.15.4, is
REQUIRED in this document as the basis for IPv6 header compression on
top of NFC. All headers MUST be compressed according to RFC 6282
encoding formats.
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Therefore, IPv6 header compression in [RFC6282] MUST be implemented.
Further, implementations MUST also support Generic Header Compression
(GHC) of [RFC7400].
If a 16-bit address is required as a short address, it MUST be formed
by padding the 6-bit NFC link-layer (node) address to the left with
zeros as shown in Figure 8.
0 1
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Padding(all zeros)| NFC Addr. |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Figure 8: NFC short address format
4.7. Fragmentation and Reassembly Considerations
IIPv6-over-NFC MUST NOT use fragmentation and reassembly (FAR) at the
adaptation layer for the payloads as discussed in Section 3.4. The
NFC link connection for IPv6 over NFC MUST be configured with an
equivalent MIU size to support the IPv6 MTU requirement (of 1280
bytes). To this end, the MIUX value is 0x480.
4.8. Unicast and Multicast Address Mapping
The address resolution procedure for mapping IPv6 non-multicast
addresses into NFC link-layer addresses follows the general
description in Section 4.6.1 and 7.2 of [RFC4861], unless otherwise
specified.
The Source/Target link-layer Address option has the following form
when the addresses are 6-bit NFC link-layer (node) addresses.
0 1
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Type | Length=1 |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+- Padding (all zeros) -+
| |
+- +-+-+-+-+-+-+
| | NFC Addr. |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Figure 9: Unicast address mapping
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Option fields:
Type:
1: for Source Link-layer address.
2: for Target Link-layer address.
Length:
This is the length of this option (including the type and
length fields) in units of 8 octets. The value of this field
is 1 for 6-bit NFC node addresses.
NFC address:
The 6-bit address in canonical bit order. This is the unicast
address the interface currently responds to.
The NFC Link Layer does not support multicast. Therefore, packets
are always transmitted by unicast between two NFC-enabled devices.
Even in the case where a 6LBR is attached to multiple 6LNs, the 6LBR
cannot do a multicast to all the connected 6LNs. If the 6LBR needs
to send a multicast packet to all its 6LNs, it has to replicate the
packet and unicast it on each link.
5. Internet Connectivity Scenarios
NFC networks can either be isolated or connected to the Internet.
The NFC link between two communicating devices is considered to be a
point-to-point link only. An NFC link does not support a star
topology or mesh network topology but only direct connections between
two devices. The NFC link layer does not support packet forwarding
at link layer.
5.1. NFC-enabled Device Network Connected to the Internet
Figure 10 illustrates an example of an NFC-enabled device network
connected to the Internet. The distance between 6LN and 6LBR is
typically 10 cm or less. For example, a laptop computer that is
connected to the Internet (e.g. via Wi-Fi, Ethernet, etc.) may also
support NFC and act as a 6LBR. Another NFC-enabled device may run as
a 6LN and communicate with the 6LBR, as long as both are within each
other's range.
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NFC link
6LN ------------------- 6LBR -------( Internet )--------- CN
. . .
. <- - - - Subnet - - -> . < - - - IPv6 connection - - -> .
. . to the Internet .
Figure 10: NFC-enabled device network connected to the Internet
Two or more 6LNs may be connected with a 6LBR, but each connection
uses a different subnet. The 6LBR is acting as a router and
forwarding packets between 6LNs and the Internet. Also, the 6LBR
MUST ensure address collisions do not occur and forwards packets sent
by one 6LN to another.
5.2. Isolated NFC-enabled Device Network
In some scenarios, the NFC-enabled device network may permanently be
a simple isolated network as shown in the Figure 11.
6LN 6LN - - - - -
| | .
NFC link - >| NFC link - >| .
| | .
6LN ---------------------- 6LR ---------------------- 6LR Subnet
. NFC link NFC link | .
. | .
. NFC link - >| .
. 6LN - - - - -
. .
. < - - - - - - - - - - Subnet - - - - - - - - - - > .
Figure 11: Isolated NFC-enabled device network
6. IANA Considerations
There are no IANA considerations related to this document.
7. Security Considerations
NFC is often considered to offer intrinsic security properties due to
its short link range. When interface identifiers (IIDs) are
generated, devices and users are required to consider mitigating
various threats, such as correlation of activities over time,
location tracking, device-specific vulnerability exploitation, and
address scanning.
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IPv6-over-NFC uses an IPv6 interface identifier formed from a "short
address" and a set of well-known constant bits for the modified
EUI-64 format. However, NFC applications use short-lived
connections, and a different address is used for each connection,
where the latter is of extremely short duration.
8. Acknowledgements
We are grateful to the members of the IETF 6lo working group.
Michael Richardson, Suresh Krishnan, Pascal Thubert, Carsten Bormann,
Alexandru Petrescu, James Woodyatt, Dave Thaler, Samita Chakrabarti,
Gabriel Montenegro and Carles Gomez Montenegro have provided valuable
feedback for this document.
9. Normative References
[ECMA-340]
"Near Field Communication - Interface and Protocol (NFCIP-
1) 3rd Ed.", ECMA-340 , June 2013.
[LLCP-1.3]
"NFC Logical Link Control Protocol version 1.3", NFC Forum
Technical Specification , March 2016.
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119,
DOI 10.17487/RFC2119, March 1997,
<https://www.rfc-editor.org/info/rfc2119>.
[RFC3633] Troan, O. and R. Droms, "IPv6 Prefix Options for Dynamic
Host Configuration Protocol (DHCP) version 6", RFC 3633,
DOI 10.17487/RFC3633, December 2003,
<https://www.rfc-editor.org/info/rfc3633>.
[RFC4861] Narten, T., Nordmark, E., Simpson, W., and H. Soliman,
"Neighbor Discovery for IP version 6 (IPv6)", RFC 4861,
DOI 10.17487/RFC4861, September 2007,
<https://www.rfc-editor.org/info/rfc4861>.
[RFC4862] Thomson, S., Narten, T., and T. Jinmei, "IPv6 Stateless
Address Autoconfiguration", RFC 4862,
DOI 10.17487/RFC4862, September 2007,
<https://www.rfc-editor.org/info/rfc4862>.
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[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,
<https://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,
<https://www.rfc-editor.org/info/rfc6282>.
[RFC6775] Shelby, Z., Ed., Chakrabarti, S., Nordmark, E., and C.
Bormann, "Neighbor Discovery Optimization for IPv6 over
Low-Power Wireless Personal Area Networks (6LoWPANs)",
RFC 6775, DOI 10.17487/RFC6775, November 2012,
<https://www.rfc-editor.org/info/rfc6775>.
[RFC7136] Carpenter, B. and S. Jiang, "Significance of IPv6
Interface Identifiers", RFC 7136, DOI 10.17487/RFC7136,
February 2014, <https://www.rfc-editor.org/info/rfc7136>.
[RFC7217] Gont, F., "A Method for Generating Semantically Opaque
Interface Identifiers with IPv6 Stateless Address
Autoconfiguration (SLAAC)", RFC 7217,
DOI 10.17487/RFC7217, April 2014,
<https://www.rfc-editor.org/info/rfc7217>.
[RFC7400] Bormann, C., "6LoWPAN-GHC: Generic Header Compression for
IPv6 over Low-Power Wireless Personal Area Networks
(6LoWPANs)", RFC 7400, DOI 10.17487/RFC7400, November
2014, <https://www.rfc-editor.org/info/rfc7400>.
[RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174,
May 2017, <https://www.rfc-editor.org/info/rfc8174>.
[RFC8505] Thubert, P., Ed., Nordmark, E., Chakrabarti, S., and C.
Perkins, "Registration Extensions for IPv6 over Low-Power
Wireless Personal Area Network (6LoWPAN) Neighbor
Discovery", RFC 8505, DOI 10.17487/RFC8505, November 2018,
<https://www.rfc-editor.org/info/rfc8505>.
Authors' Addresses
Choi, et al. Expires February 24, 2021 [Page 14]
Internet-Draft IPv6 over NFC August 2020
Younghwan Choi (editor)
Electronics and Telecommunications Research Institute
218 Gajeongno, Yuseung-gu
Daejeon 34129
Korea
Phone: +82 42 860 1429
Email: yhc@etri.re.kr
Yong-Geun Hong
Electronics and Telecommunications Research Institute
161 Gajeong-Dong Yuseung-gu
Daejeon 305-700
Korea
Phone: +82 42 860 6557
Email: yghong@etri.re.kr
Joo-Sang Youn
DONG-EUI University
176 Eomgwangno Busan_jin_gu
Busan 614-714
Korea
Phone: +82 51 890 1993
Email: joosang.youn@gmail.com
Dongkyun Kim
Kyungpook National University
80 Daehak-ro, Buk-gu
Daegu 702-701
Korea
Phone: +82 53 950 7571
Email: dongkyun@knu.ac.kr
JinHyouk Choi
Samsung Electronics Co.,
129 Samsung-ro, Youngdong-gu
Suwon 447-712
Korea
Phone: +82 2 2254 0114
Email: jinchoe@samsung.com
Choi, et al. Expires February 24, 2021 [Page 15]