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MANET Internetworking: Problem Statement and Gap Analysis
draft-templin-manet-inet-05

Document Type Active Internet-Draft (candidate for manet WG)
Authors Fred Templin , Daniel J. Jakubisin
Last updated 2026-04-15 (Latest revision 2026-04-02)
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draft-templin-manet-inet-05
Network Working Group                                 F. L. Templin, Ed.
Internet-Draft                                        The Boeing Company
Intended status: Informational                           D. J. Jakubisin
Expires: 4 October 2026       National Security Institute, Virginia Tech
                                                            2 April 2026

       MANET Internetworking: Problem Statement and Gap Analysis
                      draft-templin-manet-inet-05

Abstract

   [RFC2501] defines a MANET as "an autonomous system of mobile nodes.
   The system may operate in isolation, or may have gateways to and
   interface with a fixed network" (such as the global public Internet).
   This document presents a MANET Internetworking problem statement and
   gap analysis.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on 4 October 2026.

Copyright Notice

   Copyright (c) 2026 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
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   Please review these documents carefully, as they describe your rights
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   provided without warranty as described in the Revised BSD License.

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  MANET Use Cases . . . . . . . . . . . . . . . . . . . . . . .   5
   4.  MANET Internetworking Problem Statement and Gap Analysis  . .   6
     4.1.  Problem 1: MANET Local Addressing . . . . . . . . . . . .   6
     4.2.  Problem 2: Autoconfiguration  . . . . . . . . . . . . . .   8
     4.3.  Problem 3: MANET-internal Communications  . . . . . . . .   9
     4.4.  Problem 4: MANET Peer to Internetwork Correspondent . . .  10
     4.5.  Problem 5: Internetwork Correspondent to MANET Peer . . .  10
     4.6.  Problem 6: Peer-to-Peer Between Different MANETs  . . . .  11
     4.7.  Problem 7: Stub MANET to Not-so-stubby MANET
           Connections . . . . . . . . . . . . . . . . . . . . . . .  11
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  12
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  12
   7.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  12
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  13
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  13
     8.2.  Informative References  . . . . . . . . . . . . . . . . .  13
   Appendix A.  Change Log . . . . . . . . . . . . . . . . . . . . .  14
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  15

1.  Introduction

   Mobile Ad-hoc Networks (MANETs) [RFC2501] often include mobile nodes
   with limited range wireless transmission media interfaces that
   establish links via a dynamically changing set of neighbors within
   operational range.  Each mobile node engages a MANET routing protocol
   to discover links to first hop neighbors as well as multihop paths to
   reach other nodes beyond.  As IP routers [RFC0791][RFC8200], MANET
   routers represent multihop paths as "host routes" established through
   either proactive or on-demand discovery.

   Individual MANETs typically include modest numbers of mobile nodes
   (e.g., O(1), O(10), O(100), etc.); this naturally limits the number
   of host routes needed in the local routing system.  MANETs can merge
   to form larger MANETs and/or partition into smaller MANETs according
   to dynamic network conditions such as mobility.  MANETs may also have
   internal clusters with cluster heads that limit the extent over which
   host routes propagate to reduce control message overhead.  Finally,
   MANETs often operate autonomously unless or until they encounter
   Internetwork access points of opportunity.

   Data communications between two nodes within the same MANET local
   routing region follow host routes using MANET-internal links.  When a
   MANET border router establishes an Internetwork link, it can provide
   "Internet connection-sharing" access to the rest of the MANET as a

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   connected "stub" network.  Per [RFC2501], "stub networks carry
   traffic originating at and/or destined for internal nodes, but do not
   permit exogenous traffic to "transit" through the stub network".

   Practical applications however suggest that MANETs can act as either
   true stub networks (e.g., a cellphone providing a hotspot for a
   multihop WiFi IBSS) or as "not-so-stubby" networks (e.g., Intelligent
   Transportation Systems where the 5G/6G "SideLink" service supports
   vehicle-to-vehicle (V2V) multihopping).  In the former case, the
   cellphone acts as an IP router for a stub WiFi MANET behind it and
   the individual WiFi nodes act as dependent nodes.  In the latter
   case, individual 5G/6G SideLink nodes can connect the stub MANETs
   they aggregate across not-so-stubby V2V multihop forwarding paths.
   MANET Internetworking must therefore be capable of accommodating all
   such scenarios.

   A widely-accepted axiom at the time of this writing suggests that
   there are more cellphones than people on the planet [STATISTA].
   According to Wikipedia, the world population reached 8 billion in
   2022 and is expected to reach 10 billion by 2056 [WIKI].  Each mobile
   node that connects to the global public Internet can in some sense be
   regarded as a singleton "MANET" with the potential to connect still
   larger MANETs.

   MANET Internetworking therefore regards the global Internet as a
   "network of (mobile ad-hoc) networks" with unrestricted dynamic
   relationships between distinct MANET local routing regions joined by
   a Non-Broadcast Multiple Access (NBMA) virtual overlay link.
   Figure 1 illustrates an example of 2 distinct MANET local routing
   regions connected via the NBMA overlay using the Internet as transit:

                                .-(::::::::)
                             .-(::: Global ::)-.
                  X==+======(===================)======+==X
                     |        `-(: Internet :)-'       |
                     |           `-(::::::)-'          |
                     |                                 |
              .-(::::::::)                       .-(::::::::)
           .-(::::::::::::)-.                 .-(::::::::::::)-.
          (::::: MANET 1 :::::)              (::::: MANET 2 :::::)
            `-(::::::::::::)-'                 `-(::::::::::::)-'
               `-(::::::)-'                       `-(::::::)-'

                      Figure 1: MANET Internetworking

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   While the figure depicts just 2 MANET local routing regions, many
   others worldwide will also want to connect to the virtual link.
   Since a sustained increase in both the world population and number of
   mobile wireless devices is certain, MANET Internetworking must
   therefore accommodate populations on the order of 10**10.  This
   includes address duplication avoidance through operational assurance
   since statistical properties alone may be insufficient to avoid
   duplication in such a large population.

2.  Terminology

   The following terms are defined within the scope of this document:

   Mobile Ad-hoc Network (MANET)
      the same as defined in [RFC2501]; often includes mobile nodes with
      limited range wireless transmission media interfaces that
      establish links via a dynamically changing set of neighbors within
      operational range.

   Internetwork
      a more stable and wide-area terrestrial, non-terrestrial or hybrid
      network that can serve as transit to interconnect disjoint (or
      partitioned) MANET local routing regions.  The global public
      Internet is an example, as are private operator service networks
      either individually or in concatenations with other service
      networks.

   MANET Interface
      a node's (typically wireless) limited range transmission media
      interface with indeterminant connectivity properties.

   MANET Router
      a node that runs a routing protocol over one or more MANET
      interfaces to establish multihop forwarding paths within a local
      routing region.

   MANET Cluster Head
      a MANET router that joins multiple smaller MANET local routing
      regions to form a single larger local routing region.  Each
      smaller region is seen as a cluster within the larger region.

   MANET Border Router
      a MANET router that also has a continuous or intermittent
      interface connection to a transit Internetwork.

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   Client
      a MANET router that connects to a multilink Internetworking
      service via Proxy/Servers in a Non-Broadcast, Multiple Access
      (NBMA) overlay.

   Proxy/Server
      an overlay multilink network service node in an Internetwork that
      provides proxy forwarding services to MANET border routers and
      other MANET router Clients.

   Mobility Anchor Point (MAP)
      a Proxy/Server that also provides mobility, address/prefix
      autoconfiguration and address resolution services to Clients.  The
      MAP also runs an interdomain routing protocol (e.g., BGP) to
      announce its Client associations to Gateways.  All (reasonably)
      stable Proxy/Servers are eligible to serve as MAPs as part of a
      Distributed Mobility Management (DMM) service.

   Gateway
      an overlay multilink network service node that runs an interdomain
      routing protocol (e.g., BGP) to track Client-to-MAP associations.
      Gateways furthermore join multiple Internetworking segments in an
      overlay multilink virtual bridging service to form larger
      Internetworks.

3.  MANET Use Cases

   MANETs have an important role in emergency response communications,
   disaster relief situations, communications in remote and rural areas,
   military operations, vehicular and swarm communications, and low-
   powered Internet of things (IoT) applications.  MANETs provide the
   ability to establish and maintain communications when infrastructure-
   based networks, such as 5G cellular communication systems, are not
   accessible.  As described above, MANETs may also provide Internet
   connectivity to internal nodes, for example, as a "stub" network via
   MANET routers which possess an Internetworking capability and an
   external connection to a radio access network.

   Example use cases of such MANETs include the following:

   *  Disaster Relief: Disaster situations may compromise network
      infrastructure, such as through the loss of base stations in a
      cellular radio access network (RAN).  In this scenario, MANET
      networks can play a role in closing coverage gaps through multi-
      hop routing to nodes within the coverage area of uncompromised
      base stations.  This use case is broadly applicable to any
      situation in which nodes are operating outside or at the periphery
      of RAN coverage.

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   *  Tracking and Monitoring: Another example use case is the tracking
      and monitoring of data from low-cost low-power IoT devices
      ("tags") which may be placed on packages during shipment or
      storage.  Such devices may transition in and out of coverage of
      infrastructure-based networks, often being located in environments
      that are not conducive to RF propagation (e.g., shipping
      container, warehouse, etc.).  The ability to discover and connect
      to neighboring MANET-enabled devices and to establish Internet
      connectivity through such MANETs, enables real-time logistics and
      inventory data to be collected opportunistically.

   *  UAV Swarms: local communications within swarms for coordination
      and cooperation is a good use case for MANET networks due to the
      highly mobile dynamic nature of such networks.  Yet swarms may
      also benefit from connectivity to the Internet, or other external
      networks.  And in large swarm-based MANETs, routing of traffic
      through infrastructure networks to MANET endpoints, rather than
      traversing the entire MANET can improve communications throughput
      and reliability.

      Under mobility conditions, distinct UAV swarms defined by MANET
      local routing regions will encounter situations where the local
      regions enter into communications range of each other.  In this
      case, it is desirable to establish cluster heads between these
      regions and to propagation host routes over them as new
      interconnections are available and discovered.  Moreover, UAV
      swarms for which internetworking will be persistent should be able
      to perform local region merger.  In this case, internetworking
      protocols must support seamless merger of the MANET local routing
      regions into a larger region.  Conversely, nodes or collections of
      nodes which leave coverage of the local region should be capable
      of establishing and operating an independent local region at a
      future time.

4.  MANET Internetworking Problem Statement and Gap Analysis

4.1.  Problem 1: MANET Local Addressing

   MANET Internetworking observes the IP addressing model in ad hoc
   networks [RFC5889].  Each MANET router requires a unique IP address
   for MANET local communications and a unique router ID for
   participation in the local routing protocol.  For MANETs that are
   only intermittently connected to an Internetwork, these IP addresses
   must be generated from prefixes of scope greater than link-local but
   not associated with any infrastructure aggregation points.  For all
   MANET types, each address and router ID must be locally-unique within
   the (limited) MANET local routing region.  For not-so-stubby MANETs,
   each address must also be globally-unique among all MANET local

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   routing regions worldwide while router IDs only need be locally
   unique.

   The locally-unique property ensures that no two nodes that
   participate in the routing protocol within the same MANET local
   routing region configure the same address and/or router ID.  The
   globally-unique property for addresses may seem moot until one
   considers that a first MANET can merge with other MANETs, and nodes
   from a first MANET can freely move to other MANETs.  This may allow a
   node from a first MANET where there are no duplicates to interact
   with other MANETs where a duplicate address may be encountered
   resulting in unpredictable behavior and/or communication failures.

   Although the node population for each MANET local routing region is
   likely to be modest (O(100) or less), the total population of MANET
   nodes that may join the MANET Internetwork overlay may be on the
   order of the number of worldwide mobile connections (see: Section 1).
   Assuming O(10**10) wireless connections, if MANET nodes assigned
   random addresses from a 64-bit space, the probability of one or more
   collisions within the total world population (i.e., when multiple
   nodes independently configure the same address) exceeds 98%
   [RFC9374].  With such a high likelihood of duplication in the
   worldwide population, unresolvable collisions could disrupt
   communications.

   When MANET Internetworking is applied to connect routers in different
   not-so-stubby MANETs, independent local routing regions are
   dynamically joined by an overlay that spans any underlying
   Internetworks as a normal course of operational data communications.
   When multiple MANET local routing regions merge in this way, the
   MANET local addresses present in all MANETs must be mutually
   exclusive.

   In the limiting case, all worldwide MANET local routing regions may
   be considered to be persistently merged over the MANET
   Internetworking overlay at all times.  Statistical uniqueness
   properties of random assignments from even very large populations may
   therefore be insufficient to ensure collision freedom since MANET
   Internetworking exposes the full world population of MANET local
   addresses as potential duplicates.

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   Nodes in not-so-stubby MANETs should therefore configure MANET local
   addresses managed for global uniqueness even if they first self-
   generate the addresses (e.g., based on a secure hash of a public key)
   before enrolling them in a registration service.  The node assigns
   its MANET local address to an overlay multilink network interface or
   another virtual interface such as a loopback.  Routers in all MANETs
   also configure unique router IDs that may be derived from a globally-
   unique IP address or randomly generated with sufficient statistical
   uniqueness properties within the local region.

   An important use case for IPv6 Link-Local Addresses (LLAs) remains
   even when MANET routers assign MANET local addresses.  MANET routers
   assign LLAs to their MANET interfaces by embedding their interface
   Media Access Control (MAC) addresses within the LLA Interface
   Identifier (IID) [RFC4862][RFC5889].  This provides a next hop
   address for routes discovered by the MANET routing protocol and
   supports stateless forwarding based on the LLA's embedded MAC address
   without requiring address resolution messaging.  Since each MANET
   router assigns a MAC address independently, the possibility for
   duplication exists but this does not present a problem if the MANET
   router sets its router ID to a locally unique value instead of an
   LLA.  Any packets forwarded according to a duplicate next hop LLA
   would simply be deconflicted by the IP layers of the multiple next
   hop routers.

4.2.  Problem 2: Autoconfiguration

   When a MANET comes in contact with a fixed Internetwork such as the
   global public Internet, nodes in the MANET that engage global mobile
   Internetworking services require some means of autoconfiguring
   global-scoped IP addresses or prefixes that are properly routable by
   network elements accessible from the current point of attachment.
   These network elements are typically proxies or gateways of some
   variety that connect to the mobile routing system.

   Nodes in the MANET local routing region that are multiple IP hops
   away from a MANET border router with an Internetwork connection
   cannot use unmodified standard autoconfiguration services including
   IPv6 Neighbor Discovery (IPv6ND) [RFC4861] or DHCPv6 [RFC8415] over a
   MANET interface since these services are link-scoped in nature.  (The
   DHCPv6 architecture includes a "relay" function, but the dynamic
   nature of links in (multi-link) MANET local routing regions may
   interfere with straightforward application of DHCPv6 relays.)

   Two methods of supporting generalized autoconfiguration for nodes
   within a MANET have been suggested.  In a first method (conducted
   directly over MANET interfaces) first-hop neighboring nodes within
   the MANET collectively participate to repeat link-scoped

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   autoconfiguration discovery requests to other neighbors that are
   topologically closer to a MANET border router.  This hop-by-hop
   process continues between neighbors until the request arrives at a
   MANET border router that can then contact an Internetwork element
   capable of delegating an Internet Service Provider (ISP) Provider-
   Aggregated (PA) IP address or prefix.  The Internetwork element then
   returns the delegated IP address/prefix in a reply that traverses the
   reverse path to the original requesting node.  Each MANET router then
   configures a route to this IP address/prefix within the MANET local
   routing protocol, i.e., the MANET local routing protocol becomes
   aware of the delegation.

   In a second autoconfiguration method, the requesting node configures
   a (virtual) overlay multilink network interface over its (physical)
   MANET interface(s) and issues standard link-scoped IPv6ND and/or
   DHCPv6 requests over the virtual interface.  The virtual interface
   applies encapsulation to provide the appearance of a single NBMA link
   spanning the entire (multilink) MANET.  This virtual link supports
   standard link-scoped autoconfiguration services coordinated with an
   Internetwork element capable of delegating an address.  For stub
   MANETs, the MANET border router itself delegates a public or private
   IP address.  For not-so-stubby MANETs, an overlay Internetwork
   Mobility Anchor Point (MAP) delegates a Mobility Service Provider
   (MSP) Mobile Network Prefix (MNP) as a Provider-Independent (PI) IP
   prefix maintained by the overlay for the requesting node to provision
   on downstream-attached interfaces.  The MAP then returns the
   delegated IP prefix in a link-scoped reply over the virtual interface
   that traverses the reverse path to the original requesting node.

   In summary, MANET nodes located one or more hops from a MANET border
   router can regard the MANET border router as a Network Address
   Translator (NAT) to convert MANET local addresses into MNP addresses
   with no autoconfiguration requirements; they can also request address
   delegations directly from the border router's MNP(s) and use them to
   support communications with Internetwork peers according to the stub
   model.  MANET nodes can instead (or in addition) request their own
   MNPs and register their MANET local addresses with a MAP while using
   the MANET border router as a transit intermediate system according to
   the not-so-stubby model.

4.3.  Problem 3: MANET-internal Communications

   Two nodes located within the same local MANET routing region should
   be able to communicate (across multiple hops if necessary) using
   MANET local addressing with no external Internetwork infrastructure
   reference points.  As long as the MANET local addresses configured by
   communicating peers are unique, the MANET local routing system
   maintains continuous multihop forwarding services to ensure session

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   continuity.

   Nodes within the MANET local routing region can discover the MANET
   local addresses of peers using services like Multicast DNS (mDNS)
   [RFC6762] supported by Simplified Multicast Forwarding (SMF)
   [RFC6621].  Peer-to-peer communications can then be coordinated in
   multihop fashion using OMNI encapsulation and header compression via
   an overlay virtual link spanning any MANET intermediate hops in the
   path.

4.4.  Problem 4: MANET Peer to Internetwork Correspondent

   When an originating peer (or its stub MANET border router) within a
   not-so-stubby MANET needs to communicate with correspondents
   connected elsewhere in an external Internetwork, the peer consults
   the global DNS which returns a (stable) globally-routable IP address
   for the correspondent.  The peer can then use one of its MNP-based IP
   addresses obtained through autoconfiguration and the global IP
   address of the Internetwork correspondent as the source and
   destination addresses for packet exchanges.

   The MANET peer first establishes per-flow on-demand virtual circuits
   in the overlay to an Internetwork relay beyond the MANET border.
   MANET local multihop routing will then convey the peer's original
   packets to the MANET border which then forwards them via the overlay
   to an Internetwork relay which directs the packets to the
   correspondent node.

   In the reverse path, the correspondent uses the MNP-based IP address
   of the peer obtained from the source address of initiating packets as
   the destination address for reply packets.  Standard Internetwork
   routing will direct the packets back to the relay which then forwards
   them via per-flow overlay virtual circuits to the originating peer's
   MANET border.  MANET local routing and forwarding will then convey
   the packets over one or more MANET local hops until they ultimately
   reach the peer.

   In this case, the originating peer's IP address need not appear in
   the global DNS since the correspondent discovers the address by
   examining the source of received packets.

4.5.  Problem 5: Internetwork Correspondent to MANET Peer

   When an Internetwork correspondent needs to communicate with a target
   peer within a MANET local routing region, the correspondent consults
   the global DNS to determine an IP address for the peer.

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   The correspondent then forwards packets via standard Internet routing
   until they arrive at a relay.  The relay then establishes per-flow
   virtual circuits in the overlay to the MANET peer while forwarding
   packets via the virtual circuit until they reach the destination.
   Reverse path forwarding from the MANET peer to the Internetwork
   correspondent is then conducted in the same manner described in
   Section 4.4.

   IP addresses covered by delegated prefixes remain stable even across
   MANET-wide mobility events to the point that continuous dynamic
   updates to the DNS are not required to maintain uninterruptable
   communications.  While it is possible that mobility events may cause
   minor temporary disruptions, transport protocol retransmissions will
   maintain continuity for any ongoing sessions.

4.6.  Problem 6: Peer-to-Peer Between Different MANETs

   When two prospective peer nodes are located in different MANET local
   routing regions separated by one or more transit Internetwork
   segments, both peers should include their IP addresses in global DNS
   resource records for the same reasons cited in Section 4.5.

   The peers then establish per-flow virtual circuits in the overlay to
   support peer-to-peer packet forwarding.  The peers may use either an
   MNP address or their MANET local address, which are routable within
   the overlay limited domain.  The overlay therefore exhibits the
   outward appearance of a MANET-of-MANETs, where overlay interior nodes
   engage in an interdomain global routing service bridging many MANET
   local routing regions.

   A certain degree of coordination between peer nodes and the MSP is
   then required to maintain address mappings.  The MSP is responsible
   for ensuring that each peer remains reachable at its stable IP
   address/prefix through distributed mobility management.

   Note that a common use case includes joining multiple partitions of a
   formerly unified MANET local routing region.  The partitions may
   arise from pre-planned or un-planned node mobility patterns, but as
   long as each partition includes a MANET border router with an
   Internetwork connection nodes within different partitions can
   continue to communicate using their MANET local addresses.

4.7.  Problem 7: Stub MANET to Not-so-stubby MANET Connections

   When a MANET border router connects a stub MANET to an Internetwork,
   it can either delegate global-scoped IP addresses to stub MANET nodes
   or apply Network Address Translation (NAT) to non-global scoped
   addresses to support external communications.

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   In the public case, all manners of peer-to-peer communications are
   made possible due to the globally routable nature of the addresses.
   In the NAT case, only communications initiated by a stub network peer
   are supported since the reverse path terminates at the NAT.

   The stub MANET itself may configure a local overlay that regards the
   (multihop) MANET as a single unified link.  In that case, the stub
   network overlay link is distinct from the overlay link that spans the
   global public Internet and the two links are joined by an IPv6
   router.

   In the not-so-stubby case, a single overlay link extends across both
   any transit Internetworks and the source and target MANETs
   themselves.  All peer-to-peer communications are therefore conveyed
   across the common MANET Internetworking overlay.

5.  IANA Considerations

   This document is an informational problem statement and does not in
   itself request any IANA actions.  IANA considerations can be found in
   solution space documents.

6.  Security Considerations

   This document is an informational problem statement and does not in
   itself address security.  Security considerations can be found in
   solution space documents.

7.  Acknowledgements

   Discussions on the MANET working group mailing list helped shape
   concepts exposed in this document.  Abdussalam Baryun encouraged a
   MANET use case analysis.

   Polls conducted by chairs during the IETF124 MANET working group
   session presentation of this document showed unanimous and
   substantial interest in MANET Internetworking:
   https://datatracker.ietf.org/meeting/124/materials/minutes-124-manet-
   202511061630-00.

   Discussions during the IETF125 MANET working group presentation and
   in subsequent MANET list posts that followed showed significant
   sustained interest.

   This work is aligned with the Boeing/Virginia Tech National Security
   Institute (VTNSI) 5G MANET research program.

   Honoring life, liberty and the pursuit of happiness.

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8.  References

8.1.  Normative References

   [RFC0791]  Postel, J., "Internet Protocol", STD 5, RFC 791,
              DOI 10.17487/RFC0791, September 1981,
              <https://www.rfc-editor.org/info/rfc791>.

   [RFC8200]  Deering, S. and R. Hinden, "Internet Protocol, Version 6
              (IPv6) Specification", STD 86, RFC 8200,
              DOI 10.17487/RFC8200, July 2017,
              <https://www.rfc-editor.org/info/rfc8200>.

8.2.  Informative References

   [RFC2501]  Corson, S. and J. Macker, "Mobile Ad hoc Networking
              (MANET): Routing Protocol Performance Issues and
              Evaluation Considerations", RFC 2501,
              DOI 10.17487/RFC2501, January 1999,
              <https://www.rfc-editor.org/info/rfc2501>.

   [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>.

   [RFC5889]  Baccelli, E., Ed. and M. Townsley, Ed., "IP Addressing
              Model in Ad Hoc Networks", RFC 5889, DOI 10.17487/RFC5889,
              September 2010, <https://www.rfc-editor.org/info/rfc5889>.

   [RFC6621]  Macker, J., Ed., "Simplified Multicast Forwarding",
              RFC 6621, DOI 10.17487/RFC6621, May 2012,
              <https://www.rfc-editor.org/info/rfc6621>.

   [RFC6762]  Cheshire, S. and M. Krochmal, "Multicast DNS", RFC 6762,
              DOI 10.17487/RFC6762, February 2013,
              <https://www.rfc-editor.org/info/rfc6762>.

   [RFC8415]  Mrugalski, T., Siodelski, M., Volz, B., Yourtchenko, A.,
              Richardson, M., Jiang, S., Lemon, T., and T. Winters,
              "Dynamic Host Configuration Protocol for IPv6 (DHCPv6)",
              RFC 8415, DOI 10.17487/RFC8415, November 2018,
              <https://www.rfc-editor.org/info/rfc8415>.

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   [RFC9374]  Moskowitz, R., Card, S., Wiethuechter, A., and A. Gurtov,
              "DRIP Entity Tag (DET) for Unmanned Aircraft System Remote
              ID (UAS RID)", RFC 9374, DOI 10.17487/RFC9374, March 2023,
              <https://www.rfc-editor.org/info/rfc9374>.

   [STATISTA] Statista, S., "Number of connected devices worldwide as of
              October 2025, by device,
              https://www.statista.com/statistics/1559435/connected-
              devices-worldwide", March 2026.

   [WIKI]     Wikipedia, W., "World population milestones,
              https://en.wikipedia.org/wiki/
              World_population_milestones", March 2026.

Appendix A.  Change Log

   << RFC Editor - remove prior to publication >>

   Differences from -04 to -05:

   *  Updated discussion of world population estimates.

   *  Clarified distinctions between IP addresses and router IDs.

   Differences from -03 to -04:

   *  Cited [RFC4862][RFC5889] and discussed LLAs.

   Differences from -02 to -03:

   *  Added terminology section; expanded use case discussion.

   *  Updated architecture figure and made clarifications to the general
      discussion.

   *  Updated acknowledgements to reflect IETF interest.

   Differences from -01 to -02:

   *  Simplified addressing model under Autoconfiguration section.  Only
      autoconfiguration now necessary is for Mobile Network Prefixes
      (MNPs).

   Differences from -00 to -01:

   *  Included use case discussion.

   *  Slight clarification to addressing model.

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   Differences from earlier versions:

   *  First draft publication.

Authors' Addresses

   Fred L. Templin (editor)
   The Boeing Company
   P.O. Box 3707
   Seattle, WA 98124
   United States of America
   Email: fltemplin@acm.org

   Daniel J. Jakubisin
   National Security Institute, Virginia Tech
   2202 Kraft Dr.
   Blacksburg, VA 24060
   United States of America
   Email: djj@vt.edu

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