RFC 1112 · INTERNET STANDARD · 1989
SUN · 14 JUN 2026
Host extensions for IP multicasting
Overview
RFC 1112, “Host extensions for IP multicasting”, is an Internet Standard document published in August 1989 by S.E. Deering. It obsoletes RFC 988, RFC 1054. It has since been updated by RFC 2236. The canonical text is published by the RFC Editor.
Abstract
This memo specifies the extensions required of a host implementation of the Internet Protocol (IP) to support multicasting. Recommended procedure for IP multicasting in the Internet. This RFC obsoletes RFCs 998 and 1054. [STANDARDS-TRACK]
What “Internet Standard” means
A mature, widely-implemented specification that has completed the full IETF standards process — the highest maturity level on the standards track.
Read this RFC
The canonical text of RFC 1112 is hosted at rfc-editor.org. Available in TXT,HTML.
Relationships to other RFCs
Other RFCs from 1989
- RFC 1111 Request for comments on Request for Comments: Instructions to RFC authors
- RFC 1113 Privacy enhancement for Internet electronic mail: Part I - message encipherment and authentication procedures
- RFC 1110 Problem with the TCP big window option
- RFC 1114 Privacy enhancement for Internet electronic mail: Part II - certificate-based key management
- RFC 1109 Report of the second Ad Hoc Network Management Review Group
- RFC 1115 Privacy enhancement for Internet electronic mail: Part III - algorithms, modes, and identifiers
- RFC 1116 Telnet Linemode option
- RFC 1107 Plan for Internet directory services