RFC 5771 · BEST CURRENT PRACTICE · 2010
MON · 27 JUL 2026
IANA Guidelines for IPv4 Multicast Address Assignments
Overview
RFC 5771, “IANA Guidelines for IPv4 Multicast Address Assignments”, is a Best Current Practice document published in March 2010 by M. Cotton, L. Vegoda, D. Meyer. It updates RFC 2780. It obsoletes RFC 3138, RFC 3171. The canonical text is published by the RFC Editor.
Abstract
This document provides guidance for the Internet Assigned Numbers Authority (IANA) in assigning IPv4 multicast addresses. It obsoletes RFC 3171 and RFC 3138 and updates RFC 2780. This memo documents an Internet Best Current Practice.
What “Best Current Practice” means
Documents the IETF community's recommended operational or procedural practice rather than a protocol specification.
Read this RFC
The canonical text of RFC 5771 is hosted at rfc-editor.org. Available in TXT,HTML.
Relationships to other RFCs
Other RFCs from 2010
- RFC 5770 Basic Host Identity Protocol Extensions for Traversal of Network Address Translators
- RFC 5772 A Set of Possible Requirements for a Future Routing Architecture
- RFC 5769 Test Vectors for Session Traversal Utilities for NAT
- RFC 5773 Analysis of Inter-Domain Routing Requirements and History
- RFC 5768 Indicating Support for Interactive Connectivity Establishment in the Session Initiation Protocol
- RFC 5774 Considerations for Civic Addresses in the Presence Information Data Format Location Object : Guidelines and IANA Registry Definition
- RFC 5767 User-Agent-Driven Privacy Mechanism for SIP
- RFC 5775 Asynchronous Layered Coding Protocol Instantiation