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IPWAVE Working Group                                            J. Jeong
Internet-Draft                                   Sungkyunkwan University
Intended status: Standards Track                                  S. Lee
Expires: April 25, 2019                                      Ericsson-LG
                                                                 J. Park
                                                                    ETRI
                                                        October 22, 2018


       DNS Name Autoconfiguration for Internet of Things Devices
                 draft-jeong-ipwave-iot-dns-autoconf-04

Abstract

   This document specifies an autoconfiguration scheme for device
   discovery and service discovery.  Through the device discovery, this
   document supports the global (or local) DNS naming of Internet of
   Things (IoT) devices, such as sensors, actuators, and in-vehicle
   units.  By this scheme, the DNS name of an IoT device can be
   autoconfigured with the device's model information in wired and
   wireless target networks (e.g., vehicle, road network, home, office,
   shopping mall, and smart grid).  Through the service discovery, IoT
   users (e.g., drivers, passengers, home residents, and customers) in
   the Internet (or local network) can easily identify each device for
   monitoring and remote-controlling it in a target network.

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 April 25, 2019.

Copyright Notice

   Copyright (c) 2018 IETF Trust and the persons identified as the
   document authors.  All rights reserved.




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   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
     1.1.  Applicability Statements  . . . . . . . . . . . . . . . .   4
   2.  Requirements Language . . . . . . . . . . . . . . . . . . . .   4
   3.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Overview  . . . . . . . . . . . . . . . . . . . . . . . . . .   5
   5.  DNS Name Autoconfiguration  . . . . . . . . . . . . . . . . .   5
     5.1.  DNS Name Format with Object Identifier  . . . . . . . . .   5
     5.2.  Procedure of DNS Name Autoconfiguration . . . . . . . . .   6
       5.2.1.  DNS Name Generation . . . . . . . . . . . . . . . . .   6
       5.2.2.  DNS Name Collection . . . . . . . . . . . . . . . . .   7
       5.2.3.  DNS Name Retrieval  . . . . . . . . . . . . . . . . .   9
   6.  Location-Aware DNS Name Configuration . . . . . . . . . . . .   9
   7.  Macro-Location-Aware DNS Name . . . . . . . . . . . . . . . .  10
   8.  Micro-Location-Aware DNS Name . . . . . . . . . . . . . . . .  11
   9.  DNS Name Management for Mobile IoT Devices  . . . . . . . . .  11
   10. Service Discovery for IoT Devices . . . . . . . . . . . . . .  11
   11. Security Considerations . . . . . . . . . . . . . . . . . . .  12
   12. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  12
   13. Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  12
   14. References  . . . . . . . . . . . . . . . . . . . . . . . . .  13
     14.1.  Normative References . . . . . . . . . . . . . . . . . .  13
     14.2.  Informative References . . . . . . . . . . . . . . . . .  13
   Appendix A.  Changes from draft-jeong-ipwave-iot-dns-autoconf-03   16
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  16

1.  Introduction

   Many Internet of Things (IoT) devices (e.g., sensors, actuators, and
   in-vehicle units) have begun to have wireless communication
   capability (e.g., WiFi, Bluetooth, and ZigBee) for monitoring and
   remote-controlling in a local network or the Internet.  According to
   the capacity, such IoT devices can be categorized into high-capacity
   devices and low-capacity devices.  High-capacity devices have a high-
   power processor and a large storage, such as vehicles, road
   infrastructure devices (e.g., road-side unit, traffic light, and
   loop-detector), appliances (e.g., television, refrigerator, air



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   conditioner, and washing machine), and smart devices (smartphone and
   tablet).  They are placed in environments (e.g., vehicle, road
   network, home, office, shopping mall, and smart grid) for the direct
   use for human users, and they require the interaction with human
   users.  Low-capacity devices have a low-power processor and a small
   storage, such as sensors (e.g., in-vehicle units, light sensor,
   meter, and fire detector) and actuators (e.g., vehicle engine, signal
   light, street light, and room temperature controller).  They are
   installed for the easy management of environments (e.g., vehicle,
   road network, home, office, store, and factory), and they do not
   require the interaction with human users.

   For the Internet connectivity of IoT devices, a variety of parameters
   (e.g., address prefixes, default routers, and DNS servers) can be
   automatically configured by Neighbor Discovery (ND) for IP Version 6,
   IPv6 Stateless Address Autoconfiguration, and IPv6 Router
   Advertisement (RA) Options for DNS Configuration [RFC4861][RFC4862]
   [RFC8106].

   For these IoT devices, the manual configuration of DNS names will be
   cumbersome and time-consuming as the number of them increases rapidly
   in a network.  It will be good for such DNS names to be automatically
   configured such that they are readable to human users.

   Multicast DNS (mDNS) in [RFC6762] can provide DNS service for
   networked devices on a local link (e.g., home network and office
   network) without any conventional recursive DNS server. mDNS also
   supports the autoconfiguration of a device's DNS name without the
   intervention of the user.  mDNS aims at the DNS naming service for
   the local DNS names of the networked devices on the local link rather
   than the DNS naming service for the global DNS names of such devices
   in the Internet.  However, for IoT devices accessible from the
   Internet, mDNS cannot be used.  Thus, a new autoconfiguration scheme
   becomes required for the global DNS names of IoT devices.

   This document proposes an autoconfiguration scheme for the global (or
   local) DNS names of IoT devices.  Since an autoconfigured DNS name
   contains the model identifier (ID) of a device, IoT users in the
   Internet (or local network) can easily identify such a device.  The
   autoconfigured DNS names and corresponding IP addresses of the IoT
   devices are registered into local or remote authoritative DNS servers
   that manage the DNS suffixes of the DNS domain names.  With these DNS
   names, they will be able to monitor and remote-control their IoT
   devices with their smart devices (e.g., smartphone and tablet PC) by
   resolving their DNS names into the corresponding IP addresses.

   For cloud-based DNS naming services of IoT devices, a cloud server
   can collect DNS zone files having the global DNS names and IP



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   addresses of the IoT devices from multiple DNS servers and provide
   IoT users with such global DNS names of IoT devices relevant to the
   IoT users.  These IoT users can monitor and remote-control their IoT
   devices in the Internet with the global DNS names and IP addresses,
   using their smart devices.

1.1.  Applicability Statements

   It is assumed that IoT devices have networking capability through
   wired or wireless communication media, such as Ethernet [IEEE-802.3],
   WiFi [IEEE-802.11][IEEE-802.11a][IEEE-802.11b][IEEE-802.11g]
   [IEEE-802.11n], Dedicated Short-Range Communications (DSRC)
   [DSRC-WAVE][IEEE-802.11p], Bluetooth [IEEE-802.15.1], and ZigBee
   [IEEE-802.15.4] in a local area network (LAN) or personal area
   network (PAN).  Note that IEEE 802.11p was renamed IEEE 802.11
   Outside the Context of a Basic Service Set (OCB) [IEEE-802.11-OCB] in
   2012.

   Also, it is assumed that each IoT device has a factory configuration
   (called device configuration) having device model information by
   manufacturer ID and model ID (e.g., vehicle, road-side unit, smart
   TV, smartphone, tablet, and refrigerator).  This device configuration
   can be read by the device for DNS name autoconfiguration.

2.  Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

3.  Terminology

   This document uses the terminology described in [RFC4861] and
   [RFC4862].  In addition, four new terms are defined below:

   o  Device Configuration: A factory configuration that has device
      model information by manufacturer ID and model ID (e.g., vehicle,
      road-side unit, smart TV, smartphone, tablet, and refrigerator).

   o  DNS Search List (DNSSL): The list of DNS suffix domain names used
      by IPv6 hosts when they perform DNS query searches for short,
      unqualified domain names [RFC8106].

   o  DNSSL Option: IPv6 RA option to deliver the DNSSL information to
      IPv6 hosts [RFC8106].






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4.  Overview

   This document specifies an autoconfiguration scheme for an IoT device
   using device configuration and DNS search list.  Device configuration
   has device model information (e.g., device's manufacturer and model).
   DNS search list has DNS suffix domain names that represent the DNS
   domains of a network having the IoT device [RFC8106].

   As an IPv6 host, the IoT device can obtain DNS search list through
   IPv6 Router Advertisement (RA) with DNS Search List (DNSSL) Option
   [RFC4861][RFC8106] or DHCPv6 with Domain Search List Option
   [RFC3315][RFC3736][RFC3646].

   The IoT device can construct its DNS name with the concatenation of
   manufacturer ID, model ID, and domain name.  Since there exist more
   than one device with the same model, the DNS name should have a
   unique identification (e.g., unique ID or serial ID) to differentiate
   multiple devices with the same model.

   Since both RA and DHCPv6 can be simultaneously used for the parameter
   configuration for IPv6 hosts, this document considers the DNS name
   autoconfiguration in the coexistence of RA and DHCP.

5.  DNS Name Autoconfiguration

   The DNS name autoconfiguration for an IoT device needs the
   acquisition of DNS search list through either RA [RFC8106] or DHCPv6
   [RFC3646].  Once the DNS search list is obtained, the IoT device
   autonomously constructs its DNS name(s) with the DNS search list and
   its device information.

5.1.  DNS Name Format with Object Identifier

   A DNS name for an IoT device can have the following format with
   object identifier (OID), which is defined in [oneM2M-OID], as in
   Figure 1:

            +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
            |   unique_id.object_identifier.OID.domain_name   |
            +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

               Figure 1: IoT Device DNS Name Format with OID

   Fields:







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     unique_id          unique identifier to guarantee the uniqueness
                        of the DNS name in ASCII characters.  The
                        identifier MAY be alphanumeric with readability,
                        e.g., product name plus a sequence number.

     object_identifier  device's object identifier that consists of a
                        higher arc, that is, M2M node indication ID (
                        i.e., the concatenation of the managing
                        organization, administration, data country
                        code, and M2M node) and a sequence of four
                        arcs (i.e., manufacturer ID, model ID, serial
                        ID, and expanded ID) as defined in
                        [oneM2M-OID]. The fields are seperated by an
                        underscore '_'.

     OID                subdomain for the keyword of OID to indicate
                        that object_identifier is used.

     domain_name        domain name that represents a DNS domain for
                        the network having the IoT devices.

   Note each subdomain (i.e., unique_id, object_identifier, OID, and
   domain_name) in the domain name format in Figure 1 is expressed using
   the name syntax described in [RFC1035].

5.2.  Procedure of DNS Name Autoconfiguration

   The procedure of DNS name autoconfiguration is performed through a
   DNSSL option delivered by either RA [RFC8106] or DHCPv6 [RFC3646].

5.2.1.  DNS Name Generation

   When as an IPv6 host a device receives a DNSSL option through either
   RA or DHCPv6, it checks the validity of the DNSSL option.  If the
   option is valid, the IPv6 host performs the DNS name
   autoconfiguration with each DNS suffix domain name in the DNSSL
   option as follows:

   1.  The host constructs its DNS name with the DNS suffix domain name
       along with device configuration (i.e., manufacturer ID, model ID,
       and serial ID) and a selected identifier (as unique_id) that is
       considered unique, which is human-friendly, as shown in Figure 1.

   2.  The host constructs an IPv6 unicast address as a tentative
       address with a 64-bit network prefix and the last 64 bits of the
       MD5 hashed value of the above DNS name.





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   3.  The host constructs the solicited-node multicast address in
       [RFC4861] corresponding to the tentative IPv6 address.

   4.  The host performs Duplicate Address Detection (DAD) for the IPv6
       address with the solicited-node multicast address [RFC4861]
       [RFC4862].

   5.  If there is no response from the DAD, the host sets the IPv6
       tentative address as its IPv6 unicast address and regards the
       constructed DNS name as unique on the local link.  Otherwise,
       since the DAD fails because of DNS name conflict, go to Step 1
       for a new DNS name generation with another identifier for
       unique_id.

   6.  Since the DNS name is proven to be unique, it is used as the
       device's DNS name and the DNS autoconfiguration is done for the
       given DNS suffix domain name.  Also, the host joins the
       solicited-node multicast address for the verified DNS name in
       order to prevent other hosts from using this DNS name.

   When the DNS search list has more than one DNS suffix domain name,
   the IPv6 host repeats the above procedure until all of the DNS
   suffixes are used for the DNS name autoconfiguration along with the
   IPv6 unicast autoconfiguration corresponding to the DNS name.

5.2.2.  DNS Name Collection

   Once as IPv6 hosts the devices have autoconfigured their DNS names,
   as a collector, any IPv6 node (i.e., router or host) in the same
   subnet can collect the device DNS names using IPv6 Node Information
   (NI) protocol [RFC4620].

   For a collector to collect the device DNS names without any prior
   node information, a new NI query needs to be defined.  That is, a new
   ICMPv6 Code (e.g., 3) SHOULD be defined for the collection of the
   IPv6 host DNS names.  The Data field is not included in the ICMPv6
   header since the NI query is for all the IPv6 hosts in the same
   subnet.  The Qtype field for NI type is set to 2 for Node Name.

   The query SHOULD be transmitted by the collector to a link-local
   multicast address for this NI query.  Assume that a link-local scope
   multicast address (e.g., all-nodes multicast address, FF02::1) SHOULD
   be defined for device DNS name collection such that all the IPv6
   hosts join this link-local multicast address for the device DNS name
   collection service.

   When an IPv6 host receives this query sent by the collector in
   multicast, it transmits its Reply with its DNS name with a random



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   interval between zero and Query Response Interval, as defined by
   Multicast Listener Discovery Version 2 [RFC3810].  This randomly
   delayed Reply allows the collector to collect the device DNS names
   with less frame collision probability by spreading out the Reply time
   instants.

   After the collector collects the device DNS names, it resolves the
   DNS names into the corresponding IPv6 addresses by NI protocol
   [RFC4620] with the ICMPv6 Code 1 of NI Query.  This code indicates
   that the Data field of the NI Query has the DNS name of an IoT
   device.  The IoT device that receives this NI query sends the
   collector an NI Reply with its IPv6 address in the Data field.

   For DNS name resolution service, the collector can register the
   pair(s) of DNS name and IPv6 address for each IPv6 host into an
   appropriate designated DNS server for the DNS domain suffix of the
   DNS name.  It is assumed that the collector is configured to register
   DNS names into the designated DNS server in a secure way based on
   DNSSEC [RFC4033][RFC6840].  This registration of the DNS name and
   IPv6 address can be performed by DNS dynamic update [RFC2136].
   Before registering the DNS name into the designated DNS server, the
   collector SHOULD verify the uniqueness of the DNS name in the
   intended DNS domain by sending a DNS query for the resolution of the
   DNS name.  If there is no corresponding IPv6 address for the queried
   DNS name, the collector registers the DNS name and the corresponding
   IPv6 address for each IPv6 host into the designated DNS server.  On
   the other hand, if there is such a corresponding IPv6 address, the
   DNS name is regarded as duplicate (i.e., not unique), and so the
   corresponder notifies the corresponding IoT device with the duplicate
   DNS name of an error message of DNS name duplication using NI
   protocol.  When an IoT device receives such a DNS name duplication
   error, it needs to construct a new DNS name and repeats the procedure
   of device DNS name generation along with the uniqueness test of the
   device DNS name in its subnet.

   The two separate procedures of the DNS name collection and IPv6
   address resolution in the above NI protocol can be consolidated into
   a single collection for the pairs of DNS names and the corresponding
   IPv6 addresses.  For such an optimization, a new ICMPv6 Code (e.g.,
   4) is defined for the NI Query to query the pair of a DNS name and
   the corresponding IPv6 address.  With this code, the collector can
   collect the pairs of each IoT device's DNS name and IPv6 address in
   one NI query message rather than two NI query messages.

   For DNS name collection for IoT devices as IPv6 hosts, DHCPv6
   [RFC3315] can be used instead of the NI protocol.  For this purpose,
   a new DHCP option (called DNSNA option) needs to be defined to
   collect the pair of a DNS name and the corresponding IPv6 address of



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   an IoT device.  As a DNS information collector, a DHCPv6 server (or a
   router running a DHCPv6 server) sends a request message for the DHCP
   DNSNA option to IoT devices as its DHCPv6 clients under its address
   pool.  The clients respond to this request message by sending the
   DHCPv6 server a reply message with their DNS information.  Thus, the
   DHCPv6 server can collect the pairs of DNS names and the
   corresponding IPv6 addresses of the IoT devices.  Then, as a
   collector, the DHCPv6 server can register the DNS names and the
   corresponding IPv6 addresses of IoT devices into the designated DNS
   server.

5.2.3.  DNS Name Retrieval

   A smart device like smartphone can retrieve the DNS names of IoT
   devices by contacting a global (or local) DNS server having the IoT
   device DNS names.  If the smart device can retrieve the zone file
   with the DNS names, it can display the information of IoT devices in
   a target network, such as home network and office network.  With this
   information, the user can monitor and control the IoT devices in the
   Internet (or local network).  To monitor or remote-control IoT
   devices, Constrained Application Protocol (CoAP) can be used
   [RFC7252].

6.  Location-Aware DNS Name Configuration

   If the DNS name of an IoT device includes location information, it
   allows users to easily identify the physical location of each device.
   This document proposes the representation of a location in a DNS
   name.  In this document, the location in a DNS name consists of two
   levels for a detailed location specification, such as macro-location
   for a large area and micro-location for a small area.

   To denote both macro-location (i.e., mac_loc) and micro-location
   (i.e., mic_loc) into a DNS name, the following format is described as
   in Figure 2:

     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
     | unique_id.object_identifier.OID.mic_loc.mac_loc.LOC.domain_name |
     +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

              Figure 2: Location-Aware Device DNS Name Format

   Fields:








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     unique_id          unique identifier to guarantee the uniqueness
                        of the DNS name in ASCII characters.  The
                        identifier MAY be alphanumeric with readability,
                        such as product name plus a sequence number.

     object_identifier  device's object identifier that consists of a
                        higher arc, that is, M2M node indication ID (
                        i.e., the concatenation of the managing
                        organization, administration, data country
                        code, and M2M node) and a sequence of four
                        arcs (i.e., manufacturer ID, model ID, serial
                        ID, and expanded ID) as defined in
                        [oneM2M-OID]. The fields are seperated by an
                        underscore '_'.

     OID                subdomain for the keyword of OID to indicate
                        that object_identifier is used.

     mic_loc            device's micro-location, such as center, edge,
                        and corner.

     mac_loc            device's macro-location, such as road segment.

     LOC                subdomain for the keyword of LOC to indicate
                        that mac_loc and mic_loc are used.

     domain_name        domain name that represents a DNS domain for
                        the network having the IoT devices.

   Note each subdomain (e.g., mic_loc and mac_loc) in the domain name
   format in Figure 2 is expressed using the name syntax described in
   [RFC1035].

7.  Macro-Location-Aware DNS Name

   If location information (such as cross area, intersection, and road
   segment in a road network) is available to an IoT device, a keyword,
   coordinate, or location ID for the location information can be used
   to construct a DNS name as subdomain name.  This location information
   lets users track the position of mobile devices (such as vehicle,
   smartphone, and tablet).  The physical location of the device is
   defined as macro-location for DNS naming.

   A subdomain name for macro-location (denoted as mac_loc) MAY be
   placed between micro-location (denoted as mic_loc) and the keyword
   LOC of the DNS name format in Figure 2.  For the localization of
   macro-location, a localization scheme for indoor or outdoor can be
   used [SALA].



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8.  Micro-Location-Aware DNS Name

   An IoT device can be located in the center or edge in a place that is
   specified by macro-location.  For example, assume that a loop-
   detector is located in the start or end position of a road segment.
   If the DNS name for the loop-detector contains the start or end
   position of the road segment, a road network administrator can find
   it easily.  In this document, for this DNS naming, the detailed
   location for an IoT device can be specified as a micro-location
   subdomain name.

   A subdomain name for micro-location (denoted as mic_loc) MAY be
   placed between the keyword OID and macro-location (denoted as
   mac_loc) of the DNS name format in Figure 2.  For the localization of
   micro-location, a localization scheme for indoor or outdoor can be
   used [SALA].

9.  DNS Name Management for Mobile IoT Devices

   Some IoT devices can have mobility, such as vehicle, smartphone,
   tablet, laptop computer, and cleaning robot.  This mobility allows
   the IoT devices to move from a subnet to another subnet where subnets
   can have different domain suffixes, such as
   coordinate.road_segment.road, coordinate.intersection.road,
   living_room.home and garage.home.  The DNS name change (or addition)
   due to the mobility should be considered.

   To deal with DNS name management in mobile environments, whenever an
   IoT device enters a new subnet and receives DNS suffix domain names,
   it generates its new DNS names and registers them into a designated
   DNS server, specified by RDNSS option.

   When the IoT device recognizes the movement to another subnet, it can
   delete its previous DNS name(s) from the DNS server having the DNS
   name(s), using DNS dynamic update [RFC2136].  For at least one DNS
   name to remain in a DNS server for the location management in Mobile
   IPv6 [RFC6275], the IoT device does not delete its default DNS name
   in its home network in Mobile IPv6.

10.  Service Discovery for IoT Devices

   DNS SRV resource record (RR) can be used to support the service
   discovery of the services provided by IoT devices [RFC2782].  This
   SRV RR specifies a service name, a transport layer protocol, the
   corresponding port number, and an IP address of a process running in
   an IP host as a server to provide a service.  An instance for a
   service can be specified in this SRV RR in DNS-based service
   discovery [RFC6763].  After the DNS name registration in Section 5.2,



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   IoT devices can register their services in the DNS server via a
   router with DNS SRV RRs for their services.

   After the service registration, an IoT user can retrieve services
   available in his/her target network through service discovery, which
   can fetch the SRV RRs from the DNS server in the target network.
   Once (s)he retrieves the list of the SRV RRs, (s)he can monitor or
   remote-control the devices or their services by using the known
   protocols and domain information of the devices or their services.
   For this monitoring or remote-controlling of IoT devices, Constrained
   Application Protocol (CoAP) can be used [RFC7252].

11.  Security Considerations

   This document shares all the security issues of the NI protocol that
   are specified in the "Security Considerations" section of [RFC4620].

   To prevent the disclosure of location information for privacy
   concern, the subdomains related to location can be encrypted by a
   shared key or public-and-private keys.  For example, a DNS name of
   vehicle1.oid1.OID.coordinate1.road_segment_id1.LOC.road can be
   represented as vehicle1.oid1.OID.xxx.yyy.LOC.road where vehicle1 is
   unique ID, oid1 is object ID, xxx is a string of the encrypted
   representation of the coordinate (denoted as coordinate1) in a road
   segment, and yyy is a string of the encrypted representation of the
   road segment ID (denoted as road_segment_id1).  Thus, the location of
   the vehicle1 can be protected from unwanted users by encryption.

12.  Acknowledgments

   This work was supported by Basic Science Research Program through the
   National Research Foundation of Korea (NRF) funded by the Ministry of
   Education (2017R1D1A1B03035885).

   This work was supported in part by Global Research Laboratory Program
   through the NRF funded by the Ministry of Science and ICT (MSIT)
   (NRF-2013K1A1A2A02078326) and by the DGIST R&D Program of the MSIT
   (18-EE-01).

13.  Contributors

   This document is the group work of IPWAVE working group.  This
   document has the following contributing authors considered co-
   authors:

   o  Keuntae Lee (Sungkyunkwan University)

   o  Seokhwa Kim (Sungkyunkwan University)



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14.  References

14.1.  Normative References

   [RFC1035]  Mockapetris, P., "Domain Names - Implementation and
              Specification", RFC 1035, November 1987.

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119, March 1997.

   [RFC3315]  Droms, R., Ed., Bound, J., Volz, B., Lemon, T., Perkins,
              C., and M. Carney, "Dynamic Host Configuration Protocol
              for IPv6 (DHCPv6)", RFC 3315, July 2003.

   [RFC3646]  Droms, R., Ed., "DNS Configuration options for Dynamic
              Host Configuration Protocol for IPv6 (DHCPv6)", RFC 3646,
              December 2003.

   [RFC3736]  Droms, R., "Stateless Dynamic Host Configuration Protocol
              (DHCP) Service for IPv6", RFC 3736, April 2004.

   [RFC4033]  Arends, R., Ed., Austein, R., Larson, M., Massey, D., and
              S. Rose, "DNS Security Introduction and Requirements",
              RFC 4033, March 2005.

   [RFC4861]  Narten, T., Nordmark, E., Simpson, W., and H. Soliman,
              "Neighbor Discovery for IP Version 6 (IPv6)", RFC 4861,
              September 2007.

   [RFC4862]  Thomson, S., Narten, T., and T. Jinmei, "IPv6 Stateless
              Address Autoconfiguration", RFC 4862, September 2007.

   [RFC6840]  Weiler, S., Ed. and D. Blacka, Ed., "Clarifications and
              Implementation Notes for DNS Security (DNSSEC)", RFC 6840,
              February 2013.

   [RFC8106]  Jeong, J., Park, S., Beloeil, L., and S. Madanapalli,
              "IPv6 Router Advertisement Options for DNS Configuration",
              RFC 8106, March 2017.

14.2.  Informative References

   [DSRC-WAVE]
              Morgan, Y., "Notes on DSRC & WAVE Standards Suite: Its
              Architecture, Design, and Characteristics",
              IEEE Communications Surveys & Tutorials, 12(4), 2012.





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   [IEEE-802.11]
              IEEE Std 802.11, "Part 11: Wireless LAN Medium Access
              Control (MAC) and Physical Layer (PHY) Specifications",
              March 2012.

   [IEEE-802.11-OCB]
              IEEE 802.11 Working Group, "Part 11: Wireless LAN Medium
              Access Control (MAC) and Physical Layer (PHY)
              Specifications", IEEE Std 802.11-2016, December 2016.

   [IEEE-802.11a]
              IEEE Std 802.11a, "Part 11: Wireless LAN Medium Access
              Control (MAC) and Physical Layer (PHY) specifications -
              High-speed Physical Layer in the 5 GHZ Band", September
              1999.

   [IEEE-802.11b]
              IEEE Std 802.11b, "Part 11: Wireless LAN Medium Access
              Control (MAC) and Physical Layer (PHY) specifications -
              Higher-Speed Physical Layer Extension in the 2.4 GHz
              Band", September 1999.

   [IEEE-802.11g]
              IEEE P802.11g/D8.2, "Part 11: Wireless LAN Medium Access
              Control (MAC) and Physical Layer (PHY) specifications -
              Further Higher Data Rate Extension in the 2.4 GHz Band",
              April 2003.

   [IEEE-802.11n]
              IEEE P802.11n/D9.0, "Part 11: Wireless LAN Medium Access
              Control (MAC) and Physical Layer (PHY) specifications -
              Amendment 5: Enhancements for Higher Throughput", March
              2009.

   [IEEE-802.11p]
              IEEE Std 802.11p, "Part 11: Wireless LAN Medium Access
              Control (MAC) and Physical Layer (PHY) Specifications -
              Amendment 6: Wireless Access in Vehicular Environments",
              July 2010.

   [IEEE-802.15.1]
              IEEE Std 802.15.1, "Part 15.1: Wireless Medium Access
              Control (MAC) and Physical Layer (PHY) specifications for
              Wireless Personal Area Networks (WPANs)", June 2005.

   [IEEE-802.15.4]
              IEEE Std 802.15.4, "Part 15.4: Low-Rate Wireless Personal
              Area Networks (LR-WPANs)", September 2011.



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   [IEEE-802.3]
              IEEE Std 802.3, "IEEE Standard for Ethernet", December
              2012.

   [oneM2M-OID]
              oneM2M, "Object Identifier based M2M Device Identification
              Scheme", February 2014.

   [RFC2136]  Vixie, P., Ed., Thomson, S., Rekhter, Y., and J. Bound,
              "Dynamic Updates in the Domain Name System (DNS UPDATE)",
              RFC 2136, April 1997.

   [RFC2782]  Gulbrandsen, A., Vixie, P., and L. Esibov, "A DNS RR for
              specifying the location of services (DNS SRV)", RFC 2782,
              February 2000.

   [RFC3810]  Vida, R. and L. Costa, "Multicast Listener Discovery
              Version 2 (MLDv2) for IPv6", RFC 3810, June 2004.

   [RFC4620]  Crawford, M. and B. Haberman, Ed., "IPv6 Node Information
              Queries", RFC 4620, August 2006.

   [RFC6275]  Perkins, C., Ed., Johnson, D., and J. Arkko, "Mobility
              Support in IPv6", RFC 6275, July 2011.

   [RFC6762]  Cheshire, S. and M. Krochmal, "Multicast DNS", RFC 6762,
              February 2013.

   [RFC6763]  Cheshire, S. and M. Krochmal, "DNS-Based Service
              Discovery", RFC 6763, February 2013.

   [RFC7252]  Shelby, Z., Hartke, K., and C. Bormann, "The Constrained
              Application Protocol (CoAP)", RFC 7252, June 2014.

   [SALA]     Jeong, J., Yeon, S., Kim, T., Lee, H., Kim, S., and S.
              Kim, "SALA: Smartphone-Assisted Localization Algorithm for
              Positioning Indoor IoT Devices", Springer Wireless
              Networks, Vol. 24, No. 1, January 2018.













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Appendix A.  Changes from draft-jeong-ipwave-iot-dns-autoconf-03

   The following changes are made from draft-jeong-ipwave-iot-dns-
   autoconf-03:

   o  In Informative References, the reference to IEEE 802.11-OCB is
      updated.

Authors' Addresses

   Jaehoon Paul Jeong
   Department of Software
   Sungkyunkwan University
   2066 Seobu-Ro, Jangan-Gu
   Suwon, Gyeonggi-Do  16419
   Republic of Korea

   Phone: +82 31 299 4957
   Fax:   +82 31 290 7996
   EMail: pauljeong@skku.edu
   URI:   http://iotlab.skku.edu/people-jaehoon-jeong.php


   Sejun Lee
   Ericsson-LG
   77, Heungan-Daero 81 Beon-Gil, Dongan-Gu
   Anyang-Si, Gyeonggi-Do  14117
   Republic of Korea

   Phone: +82 31 450 4099
   EMail: prosejun14@gmail.com


   Jung-Soo Park
   Electronics and Telecommunications Research Institute
   218 Gajeong-Ro, Yuseong-Gu
   Daejeon  34129
   Republic of Korea

   Phone: +82 42 860 6514
   EMail: pjs@etri.re.kr










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