Discovering Provisioning Domain Names and Data
draft-ietf-intarea-provisioning-domains-06

Document Type Active Internet-Draft (intarea WG)
Last updated 2019-08-21 (latest revision 2019-08-12)
Replaces draft-bruneau-intarea-provisioning-domains
Stream IETF
Intended RFC status Proposed Standard
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Document shepherd Erik Kline
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Send notices to Erik Kline <ek@loon.com>
Network Working Group                                         P. Pfister
Internet-Draft                                                 E. Vyncke
Intended status: Standards Track                                   Cisco
Expires: February 13, 2020                                      T. Pauly
                                                              Apple Inc.
                                                             D. Schinazi
                                                              Google LLC
                                                                 W. Shao
                                                                   Cisco
                                                         August 12, 2019

             Discovering Provisioning Domain Names and Data
               draft-ietf-intarea-provisioning-domains-06

Abstract

   Provisioning Domains (PvDs) are defined as consistent sets of network
   configuration information.  This allows hosts to manage connections
   to multiple networks and interfaces simultaneously, such as when a
   home router provides connectivity through both a broadband and
   cellular network provider.

   This document defines a mechanism for explicitly identifying PvDs
   through a Router Advertisement (RA) option.  This RA option announces
   a PvD identifier, which hosts can compare to differentiate between
   PvDs.  The option can directly carry some information about a PvD and
   can optionally point to additional PvD information that can be
   retrieved using HTTP over TLS.

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 13, 2020.

Pfister, et al.         Expires February 13, 2020               [Page 1]
Internet-Draft            Provisioning Domains               August 2019

Copyright Notice

   Copyright (c) 2019 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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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Specification of Requirements . . . . . . . . . . . . . .   4
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Provisioning Domain Identification using Router
       Advertisements  . . . . . . . . . . . . . . . . . . . . . . .   5
     3.1.  PvD ID Option for Router Advertisements . . . . . . . . .   5
     3.2.  Router Behavior . . . . . . . . . . . . . . . . . . . . .   8
     3.3.  Non-PvD-aware Host Behavior . . . . . . . . . . . . . . .   9
     3.4.  PvD-aware Host Behavior . . . . . . . . . . . . . . . . .   9
       3.4.1.  DHCPv6 configuration association  . . . . . . . . . .  10
       3.4.2.  DHCPv4 configuration association  . . . . . . . . . .  10
       3.4.3.  Connection Sharing by the Host  . . . . . . . . . . .  11
       3.4.4.  Usage of DNS Servers  . . . . . . . . . . . . . . . .  12
   4.  Provisioning Domain Additional Information  . . . . . . . . .  12
     4.1.  Retrieving the PvD Additional Information . . . . . . . .  13
     4.2.  Operational Consideration to Providing the PvD Additional
           Information . . . . . . . . . . . . . . . . . . . . . . .  15
     4.3.  PvD Additional Information Format . . . . . . . . . . . .  15
       4.3.1.  Example . . . . . . . . . . . . . . . . . . . . . . .  17
     4.4.  Detecting misconfiguration and misuse . . . . . . . . . .  17
   5.  Operational Considerations  . . . . . . . . . . . . . . . . .  18
     5.1.  Exposing Extra RA Options to PvD-Aware Hosts  . . . . . .  18
     5.2.  Different RAs for PvD-Aware and Non-PvD-Aware Hosts . . .  18
     5.3.  Enabling Multi-homing for PvD-Aware Hosts . . . . . . . .  19
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  20
   7.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .  21
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