router advertisement daemon
rad is an IPv6 router advertisement
daemon. It periodically sends IPv6 router advertisement messages with prefix
and default router informations. Clients like
slaacd(8) use these to configure IPv6 addresses on network interfaces
and set default routes. Additionally it listens for IPv6 router solicitation
messages and responds with router advertisements.
rad is usually started at boot time, and
can be enabled by setting the following in
See rc(8) and rc.conf(8) for more information on the boot process and enabling daemons.
rad can be controlled with the
The options are as follows:
- Do not daemonize. If this option is specified,
radwill run in the foreground and log to stderr.
- Specify an alternative configuration file.
- Configtest mode. Only check the configuration file for validity.
- Use an alternate location for the default control socket.
- Produce more verbose output.
- UNIX-domain socket used for communication with ractl(8).
rad.conf(5), ractl(8), slaacd(8)
R. Draves and D. Thaler, Default Router Preferences and More-Specific Routes, RFC 4191, November 2005.
R. Hinden and S. Deering, IP Version 6 Addressing Architecture, RFC 4291, February 2006.
T. Narten, E. Nordmark, W. Simpson, and H. Soliman, Neighbor Discovery for IP version 6 (IPv6), RFC 4861, September 2007.
A. Yourtchenko and L. Colitti, Reducing Energy Consumption of Router Advertisements, RFC 7772, February 2016.
J. Jeong, S. Park, L. Beloeil, and S. Madanapalli, IPv6 Router Advertisement Options for DNS Configuration, RFC 8106, March 2017.
rad program first appeared in
rad program was written by