radvd - router advertisement daemon for IPv6
SYNOPSIS
radvd [ -vh ] [ -d debuglevel ] [ -C configfile ] [ -p
pidfile ] [ -m method ] [ -l logfile ] [ -f facility ] [
-t chrootdir ] [ -u username ]
DESCRIPTION
radvd is the router advertisement daemon for IPv6. It lis
tens to router solicitations and sends router advertise
ments as described in "Neighbor Discovery for IP Version 6
(IPv6)" (RFC 2461). With these advertisements hosts can
automatically configure their addresses and some other
parameters. They also can choose a default router based on
these advertisements.
OPTIONS
For every one character option there is also a long
option, which is listed right next to the "short" option
name:
-v, --version
Displays the version of radvd and then aborts.
-h, --help
Displays a short usage description and then aborts.
-d debuglevel, --debug debuglevel
With this option you turn on debugging information.
The debugging level is an integer in the range from
1 to 4, from quiet to very verbose. A debugging
level of 0 completely turns off debugging. If a
debugging level greater than 0 is used, radvd
doesn't background itself on start. The default
debugging level is 0.
-C configfile, --config configfile
Specifies an alternate config file. Normally the
compiled in default /etc/radvd.conf is used.
-p pidfile, --pidfile pidfile
Specifies an alternate pidfile. Normally the com
piled in default /var/run/radvd/radvd.pid is used.
-m method, --method method
Specifies the logging method to use. Possibly val
ues are:
none Completely disables any logging.
Logs to the logfile which is specified by
the -l option. If no logfile is specified on
the command line, then a compiled in default
is used (see next option).
stderr Logs to standard error.
syslog Logs to syslog (default method).
-l logfile, --logfile logfile
Specifies the logfile to use when using the logging
method logfile. The default logfile is
/var/log/radvd.log.
-f facility, --facility facility
Specifies the facility (as an integer) when using
syslog logging. Default is LOG_DAEMON.
-t chrootdir, --chrootdir chrootdir
If specified, switches to chrootdir before doing
anything else. This directory and its subdirecto
ries must have been populated first. For security
reasons, -u must always be used when using chroot
dir.
Note that this option will not currently work under
Linux because radvd requires access to the /proc
filesystem.
-u username, --username username
If specified, drops root privileges and changes
user ID to username and group ID to the primary
group of username. This is recommended for secu
rity reasons. You might also need to use -p to
point to a file in a username -writable directory
(e.g. /var/run/radvd/radvd.pid).
FILES
/usr/sbin/radvd
/etc/radvd.conf
/var/run/radvd/radvd.pid
/var/log/radvd.log
BUGS
There certainly are some bugs. If you find them or have
other suggestions please contact Lars Fennberg <lf@elemen
tal.net>.
SEE ALSO
radvd.conf(5), radvdump(8)
Pedro Roque <roque@di.fc.ul.pt> - wrote first version for Linux
Lars Fenneberg <lf@elemental.net> - current maintainer
Craig Metz <cmetz@inner.net> - port to NRL's IPv6 code for BSD4.4
Marko Myllynen <myllynen@lut.fi> - RFC 2461 update, Mobile IPv6 support
Pekka Savola <pekkas@netcore.fi> - Security fixes, change user, chroot
Nathan Lutchansky <lutchann@litech.org> - 6to4 support, bug fixes
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