RFC 6804 · HISTORIC · 2012

DISCOVER: Supporting Multicast DNS Queries

Overview

RFC 6804, “DISCOVER: Supporting Multicast DNS Queries”, is a Historic document published in November 2012 by B. Manning. The canonical text is published by the RFC Editor.

Abstract

This document describes the DISCOVER opcode, an experimental extension to the Domain Name System (DNS) to use multicast queries for resource discovery. This opcode was tested in experiments run during 1995 and 1996 for the Topology Based Domain Search (TBDS) project. This project is no longer active and there are no current plans to restart it. TBDS was the first known use of multicast transport for DNS. A client multicasts a DNS query using the DISCOVER opcode and processes the multiple responses that may result. This document defines a Historic Document for the Internet community.

Abstract as published in the RFC, via rfc-editor.org.

What “Historic” means

A specification that has been superseded or is otherwise no longer recommended for use.

Read this RFC

The canonical text of RFC 6804 is hosted at rfc-editor.org. Available in TXT,HTML.

Other RFCs from 2012

Who Is Online

In total there are 93 users online: 0 registered, 85 guests and 8 bots.

Most users ever online was 5,555 on 17 Jul 2026, 3:23 am.

Bots: AhrefsBot Applebot Baiduspider Bingbot Majestic Other Bot PetalBot SemrushBot

Users active in the past 15 minutes. Total registered members: 372