CNAME at apex - a website publisher perspective
draft-york-dnsop-cname-at-apex-publisher-view-01
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DNSOP Working Group D. York
Internet-Draft Internet Society
Intended status: Informational November 06, 2018
Expires: May 10, 2019
CNAME at apex - a website publisher perspective
draft-york-dnsop-cname-at-apex-publisher-view-01
Abstract
There has been a large amount of discussion about the "CNAME at apex"
issue within the DNSOP Working Group. This draft provides the
perspective of one publisher of multiple websites about why CNAME-
like functionality is desirable at the apex of a domain zone.
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 May 10, 2019.
Copyright Notice
Copyright (c) 2018 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
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.
York Expires May 10, 2019 [Page 1]
Internet-DraftCNAME at apex - a website publisher perspectiNovember 2018
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
2. The Challenge . . . . . . . . . . . . . . . . . . . . . . . . 3
2.1. Note . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3. CNAME works for subdomains . . . . . . . . . . . . . . . . . 4
4. CNAME at apex does not work . . . . . . . . . . . . . . . . . 4
5. Proprietary solutions . . . . . . . . . . . . . . . . . . . . 4
5.1. Proprietary lockin . . . . . . . . . . . . . . . . . . . 4
5.2. Restriction on using multiple CDNs . . . . . . . . . . . 5
6. Existing and proposed solutions . . . . . . . . . . . . . . . 5
7. Author opinion . . . . . . . . . . . . . . . . . . . . . . . 5
8. Past discussion . . . . . . . . . . . . . . . . . . . . . . . 5
9. Conventions and Definitions . . . . . . . . . . . . . . . . . 6
10. Security Considerations . . . . . . . . . . . . . . . . . . . 6
11. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 6
12. References . . . . . . . . . . . . . . . . . . . . . . . . . 6
12.1. Normative References . . . . . . . . . . . . . . . . . . 6
12.2. Informative References . . . . . . . . . . . . . . . . . 6
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . 7
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 7
1. Introduction
From the early days of the Web, publishers of websites generally
operated their main public website using the "www" subdomain, as in
"www.example.com".
In recent years many organizations have moved to dropping the "www"
and referring to their main website by simply the domain name, as in
"example.com". There are numerous reasons for this change, including
the simplicity of saying or writing the name and also smaller address
bars on mobile browsers. If you are designing a large advertisement
to display in, say, an airport hallway, you can make the domain name
address larger and more visibile if you simply use "example.com" and
drop the "www". Additionally, some web browsers are no longer
showing the full URL (or even any of the URL) and so the "www" is no
longer visible.
Regardless of the reasons, the fact is that many website publishers
and marketing/communications teams are moving to using only the
domain name without the "www" or other subdomains to reference their
public website.
The expectations from the marketing / communications teams are that:
1. users will be able to simply enter "example.com" into their
browser; and
York Expires May 10, 2019 [Page 2]
Internet-DraftCNAME at apex - a website publisher perspectiNovember 2018
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