Home Networking Control Protocol
RFC 7788

Document Type RFC - Proposed Standard (April 2016; Errata)
Last updated 2016-04-27
Replaces draft-stenberg-homenet-hncp
Stream IETF
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Stream WG state Submitted to IESG for Publication
Document shepherd Mark Townsley
Shepherd write-up Show (last changed 2015-10-05)
IESG IESG state RFC 7788 (Proposed Standard)
Consensus Boilerplate Yes
Telechat date
Responsible AD Terry Manderson
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IANA IANA review state Version Changed - Review Needed
IANA action state RFC-Ed-Ack
Internet Engineering Task Force (IETF)                       M. Stenberg
Request for Comments: 7788                                      S. Barth
Category: Standards Track                                    Independent
ISSN: 2070-1721                                               P. Pfister
                                                           Cisco Systems
                                                              April 2016

                    Home Networking Control Protocol

Abstract

   This document describes the Home Networking Control Protocol (HNCP),
   an extensible configuration protocol, and a set of requirements for
   home network devices.  HNCP is described as a profile of and
   extension to the Distributed Node Consensus Protocol (DNCP).  HNCP
   enables discovery of network borders, automated configuration of
   addresses, name resolution, service discovery, and the use of any
   routing protocol that supports routing based on both the source and
   destination address.

Status of This Memo

   This is an Internet Standards Track document.

   This document is a product of the Internet Engineering Task Force
   (IETF).  It represents the consensus of the IETF community.  It has
   received public review and has been approved for publication by the
   Internet Engineering Steering Group (IESG).  Further information on
   Internet Standards is available in Section 2 of RFC 5741.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   http://www.rfc-editor.org/info/rfc7788.

Stenberg, et al.             Standards Track                    [Page 1]
RFC 7788            Home Networking Control Protocol          April 2016

Copyright Notice

   Copyright (c) 2016 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Applicability . . . . . . . . . . . . . . . . . . . . . .   4
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   5
     2.1.  Requirements Language . . . . . . . . . . . . . . . . . .   7
   3.  DNCP Profile  . . . . . . . . . . . . . . . . . . . . . . . .   7
   4.  HNCP Versioning and Router Capabilities . . . . . . . . . . .   9
   5.  Interface Classification  . . . . . . . . . . . . . . . . . .   9
     5.1.  Interface Categories  . . . . . . . . . . . . . . . . . .   9
     5.2.  DHCP-Aided Auto-Detection . . . . . . . . . . . . . . . .  10
     5.3.  Algorithm for Border Discovery  . . . . . . . . . . . . .  11
   6.  Autonomous Address Configuration  . . . . . . . . . . . . . .  12
     6.1.  Common Link . . . . . . . . . . . . . . . . . . . . . . .  12
     6.2.  External Connections  . . . . . . . . . . . . . . . . . .  13
     6.3.  Prefix Assignment . . . . . . . . . . . . . . . . . . . .  14
       6.3.1.  Prefix Assignment Algorithm Parameters  . . . . . . .  14
       6.3.2.  Making New Assignments  . . . . . . . . . . . . . . .  16
       6.3.3.  Applying Assignments  . . . . . . . . . . . . . . . .  17
       6.3.4.  DHCPv6 Prefix Delegation  . . . . . . . . . . . . . .  17
     6.4.  Node Address Assignment . . . . . . . . . . . . . . . . .  17
     6.5.  Local IPv4 and ULA Prefixes . . . . . . . . . . . . . . .  18
   7.  Configuration of Hosts and Non-HNCP Routers . . . . . . . . .  19
     7.1.  IPv6 Addressing and Configuration . . . . . . . . . . . .  19
     7.2.  DHCPv6 for Prefix Delegation  . . . . . . . . . . . . . .  20
     7.3.  DHCPv4 for Addressing and Configuration . . . . . . . . .  20
     7.4.  Multicast DNS Proxy . . . . . . . . . . . . . . . . . . .  21
   8.  Naming and Service Discovery  . . . . . . . . . . . . . . . .  21
   9.  Securing Third-Party Protocols  . . . . . . . . . . . . . . .  22

Stenberg, et al.             Standards Track                    [Page 2]
RFC 7788            Home Networking Control Protocol          April 2016

   10. Type-Length-Value Objects . . . . . . . . . . . . . . . . . .  23
     10.1.  HNCP-Version TLV . . . . . . . . . . . . . . . . . . . .  23
     10.2.  External-Connection TLV  . . . . . . . . . . . . . . . .  24
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