radvd



RADVD(8)                                                              RADVD(8)




NAME

       radvd - router advertisement daemon for IPv6


SYNOPSIS

       radvd  [  -vh ] [ -d debuglevel ] [ -C configfile ] [ -p pidfile ] [ -m
       logmethod ] [ -l logfile ] [ -f facility ] [ -t chrootdir ] [ -u  user-
       name ]



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 2461).  With these advertise-
       ments hosts can automatically configure their addresses and some  other
       parameters. They also can choose a default router based on these adver-
       tisements.

       Note that if debugging is not enabled, radvd will  not  start  if  IPv6
       forwarding   is  disabled.   IPv6  forwarding  can  be  controlled  via
       sysctl(8), net.ipv6.conf.all.forwarding on Linux or  net.inet6.ip6.for-
       warding on BSD.

       Similarly,  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.

       -d debuglevel, --debug debuglevel
              With  this  option you turn on debugging information. The debug-
              ging 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 compiled in default
              /var/run/radvd/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.

              syslog Logs to syslog (default method).


       -l logfile, --logfile logfile
              Specifies the logfile to use when using the logging method  log-
              file.  The default logfile is /var/log/radvd.log.

       -f facility, --facility facility
              Specifies  the  facility  (as an integer) when using syslog log-
              ging. 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 filesys-
              tem, 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 user-
              name 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
       /var/run/radvd/radvd.pid
       /var/log/radvd.log


BUGS

       There  certainly  are some bugs. If you find them or have other sugges-
       tions please contact Nathan Lutchansky <lutchann@litech.org>  or  Pekka
       Savola <pekkas@netcore.fi>.



SEE ALSO

       radvd.conf(5), radvdump(8)


AUTHORS

       Pedro Roque    <roque@di.fc.ul.pt> - wrote first version for Linux
       Lars Fenneberg <lf@elemental.net>  - previous maintainer
       Pekka Savola   <pekkas@netcore.fi> - current maintainer
       Nathan Lutchansky   <lutchann@litech.org>    - 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



radvd 0.8                         29 Mar 2001                         RADVD(8)

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