Man page - radvd(8)

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Package: radvd
apt-get install radvd

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radvd

Manual

RADVD

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
FILES
BUGS
SEE ALSO
AUTHORS

NAME

radvd - router advertisement daemon for IPv6

SYNOPSIS

radvd [ -hsvc ] [ -d debuglevel ] [ -C configfile ] [ -p pidfile ] [ -m logmethod ] [ -l logfile ] [ -n nodaemon ] [ -f facility ] [ -t chrootdir ] [ -u username ]

DESCRIPTION

radvd is the router advertisement daemon for IPv6. It listens to router solicitations and sends router advertisements as described in "Neighbor Discovery for IP Version 6 (IPv6)" (RFC 4861). With these advertisements hosts can automatically configure their addresses and some other parameters. It also defines "Neighbor Discovery Optimization for IPv6 over Low-Power Wireless Personal Area Networks (6LoWPANs)" (RFC6775). They also can choose a default router based on these advertisements.

The configuration file must not be writable by others, and if non-root operation is requested, not even by self/own group.

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.

-c , --configtest

Test configuration and do startup tests and then exit.

-n , --nodaemon

Prevent the daemonizing.

-d debuglevel, --debug debuglevel

With this option you turn on debugging information. The debugging level is an integer in the range from 1 to 5, 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 compiled in default /run/radvd.pid is used.

-m method, --logmethod method

Specifies the logging method to use. Possibly values are:

none

Completely disables any logging.

logfile

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.

stderr_syslog

Logs only the high messages (of at least LOG_ERR priority) to standard error, and everything to syslog (default method).

syslog

Logs to syslog.

-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 subdirectories must have been populated first. For security reasons, -u must always be used when using chrootdir .

Note that on Linux radvd requires access to the /proc filesystem, so it is more challenging to set up the chroot environment.

-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 security 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
/run/radvd.pid
/var/log/radvd.log

BUGS

There certainly are some bugs. If you find them or have other suggestions please contact Reuben Hawkins <reubenhwk@gmail.com>.

AUTHORS

Pedro Roque <roque@di.fc.ul.pt> - wrote first version for Linux

	Lars Fenneberg			<lf@elemental.net>		- previous maintainer
	Nathan Lutchansky			<lutchann@litech.org>					- previous maintainer

Pekka Savola <pekkas@netcore.fi> - previous 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
Jim Paris	<jim@jtan.com>	- Privilege separation support

Reuben Hawkins <reubenhwk@gmail.com> - previous maintainer
Pierre Ossman <pierre@ossman.eu> - RFC6106 (DNSSL) support

Varka Bhadram	<varkabhadram@gmail.com> - 6LoWPAN-ND (RFC6775) support
Robin H. Johnson	<robbat2@gentoo.org>		- current maintainer, RA splitting per RFC 6980 & RFC4861#6.2.3
Radek Zajic	<radek@zajic.v.pytli.cz>	- NAT64 pref64 support (RFC8781)

Geert Stappers <stappers@stappers.it> - contributor