Discovering Provisioning Domain Names and Data
draft-ietf-intarea-provisioning-domains-05
intarea P. Pfister
Internet-Draft E. Vyncke, Ed.
Intended status: Standards Track Cisco
Expires: December 20, 2019 T. Pauly
Apple
D. Schinazi
Google LLC
W. Shao
Cisco
June 18, 2019
Discovering Provisioning Domain Names and Data
draft-ietf-intarea-provisioning-domains-05
Abstract
An increasing number of hosts access the Internet via multiple
interfaces or, in IPv6 multi-homed networks, via multiple IPv6 prefix
configurations context.
This document describes a way for hosts to identify such contexts,
called Provisioning Domains (PvDs), where Fully Qualified Domain
Names (FQDNs) act as PvD identifiers. Those identifiers are
advertised in a new Router Advertisement (RA) option and, when
present, are associated with the set of information included within
the RA.
Based on this FQDN, hosts can retrieve additional information about
their network access characteristics via an HTTP over TLS query.
This allows applications to select which Provisioning Domains to use
as well as to provide configuration parameters to the transport layer
and above.
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."
Pfister, et al. Expires December 20, 2019 [Page 1]
Internet-Draft Provisioning Domains June 2019
This Internet-Draft will expire on December 20, 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
Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info) in effect on the date of
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. Provisioning Domain Identification using Router
Advertisements . . . . . . . . . . . . . . . . . . . . . . . 4
3.1. PvD ID Option for Router Advertisements . . . . . . . . . 5
3.2. Router Behavior . . . . . . . . . . . . . . . . . . . . . 7
3.3. Non-PvD-aware Host Behavior . . . . . . . . . . . . . . . 8
3.4. PvD-aware Host Behavior . . . . . . . . . . . . . . . . . 8
3.4.1. DHCPv6 configuration association . . . . . . . . . . 9
3.4.2. DHCPv4 configuration association . . . . . . . . . . 9
3.4.3. Connection Sharing by the Host . . . . . . . . . . . 9
3.4.4. Usage of DNS Servers . . . . . . . . . . . . . . . . 10
4. Provisioning Domain Additional Information . . . . . . . . . 11
4.1. Retrieving the PvD Additional Information . . . . . . . . 11
4.2. Operational Consideration to Providing the PvD Additional
Information . . . . . . . . . . . . . . . . . . . . . . . 13
4.3. PvD Additional Information Format . . . . . . . . . . . . 13
4.3.1. Example . . . . . . . . . . . . . . . . . . . . . . . 15
4.4. Detecting misconfiguration and misuse . . . . . . . . . . 15
5. Operational Considerations . . . . . . . . . . . . . . . . . 16
6. Security Considerations . . . . . . . . . . . . . . . . . . . 17
7. Privacy Considerations . . . . . . . . . . . . . . . . . . . 18
8. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 18
8.1. Additional Information PvD Keys Registry . . . . . . . . 18
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