The IESG has approved the following document: - 'AS112 Redirection using DNAME' (draft-ietf-dnsop-as112-dname-06.txt) as Informational RFC This document is the product of the Domain Name System Operations Working Group. The IESG contact persons are Joel Jaeggli and Benoit Claise. A URL of this Internet Draft is: http://datatracker.ietf.org/doc/draft-ietf-dnsop-as112-dname/ Technical Summary Many sites connected to the Internet make use of IPv4 addresses that are not globally unique. Examples are the addresses designated in RFC 1918 for private use within individual sites. Devices in such environments may occasionally originate Domain Name System (DNS) queries (so-called "reverse lookups") corresponding to those private-use addresses. Since the addresses concerned have only local significance, it is good practice for site administrators to ensure that such queries are answered locally. However, it is not uncommon for such queries to follow the normal delegation path in the public DNS instead of being answered within the site. It is not possible for public DNS servers to give useful answers to such queries. In addition, due to the wide deployment of private-use addresses and the continuing growth of the Internet, the volume of such queries is large and growing. The AS112 project aims to provide a distributed sink for such queries in order to reduce the load on the IN-ADDR.ARPA authoritative servers. The AS112 project is named after the Autonomous System Number (ASN) that was assigned to it. The AS112 project does not accommodate the addition and removal of DNS zones elegantly. Since additional zones of definitively local significance are known to exist, this presents a problem. This document describes modifications to the deployment and use of AS112 infrastructure that will allow zones to be added and dropped much more easily. Working Group Summary There were no notable outcomes from the WG process or in the working-group last call. The dnsop working group chair observed strong consensus on the text and the approach described by the text following presentations and discussion on the mailing list and in multiple in-person meetings. Document Quality The document describes the use of protocols that are already defined and implemented to augment AS112 infrastructure. The approach was validated by experiment, and an abridged summary of that experiment and its results are included in the document. The Acknowledgements section of the diagram does not omit to mention any significant reviewer. The working group review included input from participants with significant DNS protocol and operations expertise, and in the opinion of this document shepherd and the working group chairs no additional expert consultation is required. Personnel The document shepherd is Tim Wicinski. The dnsop working group chairs are Tim Wicinski and Suzanne Woolf. The responsible area director is Joel Jaeggli.
