Discovering Provisioning Domain Names and Data
draft-ietf-intarea-provisioning-domains-11
Network Working Group P. Pfister
Internet-Draft E. Vyncke
Intended status: Standards Track Cisco
Expires: August 3, 2020 T. Pauly
Apple Inc.
D. Schinazi
Google LLC
W. Shao
Cisco
January 31, 2020
Discovering Provisioning Domain Names and Data
draft-ietf-intarea-provisioning-domains-11
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 August 3, 2020.
Pfister, et al. Expires August 3, 2020 [Page 1]
Internet-Draft Provisioning Domains January 2020
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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 . . . . . . . . . . 11
3.4.3. Connection Sharing by the Host . . . . . . . . . . . 11
3.4.4. Usage of DNS Servers . . . . . . . . . . . . . . . . 12
4. Provisioning Domain Additional Information . . . . . . . . . 13
4.1. Retrieving the PvD Additional Information . . . . . . . . 13
4.2. Operational Consideration to Providing the PvD Additional
Information . . . . . . . . . . . . . . . . . . . . . . . 16
4.3. PvD Additional Information Format . . . . . . . . . . . . 16
4.3.1. Example . . . . . . . . . . . . . . . . . . . . . . . 18
4.4. Detecting misconfiguration and misuse . . . . . . . . . . 18
5. Operational Considerations . . . . . . . . . . . . . . . . . 19
5.1. Exposing Extra RA Options to PvD-Aware Hosts . . . . . . 19
5.2. Different RAs for PvD-Aware and Non-PvD-Aware Hosts . . . 19
5.3. Enabling Multi-homing for PvD-Aware Hosts . . . . . . . . 21
5.4. Providing Additional Information to PvD-Aware Hosts . . . 22
6. Security Considerations . . . . . . . . . . . . . . . . . . . 23
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