MCAST-PROXY(8)

NAME
mcast-proxy - Multicast Proxy

SYNOPSIS
mcast-proxy [-dnv] [-D macro=value] [-f file]

DESCRIPTION
mcast-proxy is a multicast proxy implementation for the Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD) protocols. It is used on networks that face the client to control the multicast traffic based on the interest of the local network and to reduce the load by filtering unneeded multicast traffic.

The options are as follows:

-D macro=value
    Define macro to be set to value on the command line. Overrides the definition of macro in the configuration file.

-d  Do not daemonize. If this option is specified, mcast-proxy will run in the foreground and log to stderr.

-f file
    Specify an alternative configuration file.

-n  Only check the configuration file for validity.

-v  Produce more verbose output.

FILES

/etc/mcast-proxy.conf
    Default mcast-proxy configuration file.

SEE ALSO
multicast(4), mcast-proxy.conf(5)

STANDARDS
S. Deering, August 1989, RFC 1112, Host Extensions for IP Multicasting.

W. Fenner, November 1997, RFC 2236, Internet Group Management Protocol, Version 2.

M. Christensen, Thrane & Thrane, K. Kimball, F. Solensky, May 2006, RFC 4541, Considerations for Internet Group Management Protocol (IGMP) and Multicast Listener Discovery (MLD) Snooping Switches.

B. Fenner, H. He, B. Haberman, H. Sandick, August 2006, RFC 4605, Internet Group Management Protocol (IGMP) / Multicast Listener Discovery (MLD)-Based Multicast Forwarding ("IGMP/MLD Proxying").

HISTORY
The mcast-proxy program first appeared in OpenBSD 6.2.

AUTHORS
-nosplit mcast-proxy was written by Rafael Zalamena <rzalamena@openbsd.org>