1. Introduction

   The Internet is moving towards the deployment of an OSI lower layers
   infrastructure. This infrastructure comprises the connectionless
   network protocol (CLNP) [6] and supporting routing protocols. Also
   required as part of this infrastructure is support in the Domain Name
   System (DNS) [8] [9] for mapping between domain names and OSI Network
   Service Access Point (NSAP) addresses [7] [Note: NSAP and NSAP
   address are used interchangeably throughout this memo].

   This document defines the format of one new Resource Record (RR) for
   the DNS for domain name-to-NSAP mapping. The RR may be used with any
   NSAP address format.

   NSAP-to-name translation is accomplished through use of the PTR RR
   (see RFC 1035std13 for a description of the PTR RR). This paper describes
   how PTR RRs are used to support this translation.

   This memo assumes that the reader is familiar with the DNS. Some
   familiarity with NSAPs is useful; see [2] or [7] for additional
   information.