1RADVD(8)                                                              RADVD(8)
2
3
4

NAME

6       radvd - router advertisement daemon for IPv6
7

SYNOPSIS

9       radvd  [  -vh ] [ -d debuglevel ] [ -C configfile ] [ -p pidfile ] [ -m
10       logmethod ] [ -l logfile ] [ -f facility ] [ -t chrootdir ] [ -u  user‐
11       name ]
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13

DESCRIPTION

15       radvd is the router advertisement daemon for IPv6. It listens to router
16       solicitations and sends router advertisements as described in "Neighbor
17       Discovery  for  IP Version 6 (IPv6)" (RFC 2461).  With these advertise‐
18       ments hosts can automatically configure their addresses and some  other
19       parameters. They also can choose a default router based on these adver‐
20       tisements.
21
22       Note that if debugging is not enabled, radvd will  not  start  if  IPv6
23       forwarding   is  disabled.   IPv6  forwarding  can  be  controlled  via
24       sysctl(8), net.ipv6.conf.all.forwarding on Linux or  net.inet6.ip6.for‐
25       warding on BSD.
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27       Similarly,  the  configuration file must not be writable by others, and
28       if non-root operation is requested, not even by self/own group.
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30

OPTIONS

32       For every one character option there is also a long  option,  which  is
33       listed right next to the "short" option name:
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35
36       -v, --version
37              Displays the version of radvd and then aborts.
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39       -h, --help
40              Displays a short usage description and then aborts.
41
42       -d debuglevel, --debug debuglevel
43              With  this  option you turn on debugging information. The debug‐
44              ging level is an integer in the range from 1 to 5,  from   quiet
45              to  very  verbose.  A  debugging level of 0 completely turns off
46              debugging. If a debugging level greater than 0  is  used,  radvd
47              doesn't  background itself on start. The default debugging level
48              is 0.
49
50       -C configfile, --config configfile
51              Specifies an alternate config file.  Normally  the  compiled  in
52              default /etc/radvd.conf is used.
53
54       -p pidfile, --pidfile pidfile
55              Specifies an alternate pidfile. Normally the compiled in default
56              /var/run/radvd/radvd.pid is used.
57
58       -m method, --logmethod method
59              Specifies the logging method to use. Possibly values are:
60
61              none   Completely disables any logging.
62
63              logfile
64                     Logs to the logfile which is specified by the -l  option.
65                     If  no  logfile  is specified on the command line, then a
66                     compiled in default is used (see next option).
67
68              stderr Logs to standard error.
69
70              stderr_syslog
71                     Logs only the high messages (of at least  LOG_ERR  prior‐
72                     ity) to standard error, and everything to syslog (default
73                     method).
74
75              syslog Logs to syslog.
76
77       -l logfile, --logfile logfile
78              Specifies the logfile to use when using the logging method  log‐
79              file.  The default logfile is /var/log/radvd.log.
80
81       -f facility, --facility facility
82              Specifies  the  facility  (as an integer) when using syslog log‐
83              ging. Default is LOG_DAEMON.
84
85       -t chrootdir, --chrootdir chrootdir
86              If specified, switches to chrootdir before doing anything  else.
87              This  directory  and its subdirectories must have been populated
88              first.  For security reasons, -u must always be used when  using
89              chrootdir.
90
91              Note  that  on Linux radvd requires access to the /proc filesys‐
92              tem, so it is more challenging to set up the chroot environment.
93
94       -u username, --username username
95              If specified, drops root privileges and changes user ID to user‐
96              name  and  group  ID  to the primary group of username.  This is
97              recommended for security reasons.  You might also need to use -p
98              to  point  to  a  file  in  a username -writable directory (e.g.
99              /var/run/radvd/radvd.pid).
100

FILES

102       /usr/sbin/radvd
103       /etc/radvd.conf
104       /var/run/radvd/radvd.pid
105       /var/log/radvd.log
106

BUGS

108       There certainly are some bugs. If you find them or have  other  sugges‐
109       tions please contact Pekka Savola <pekkas@netcore.fi>.
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111

SEE ALSO

113       radvd.conf(5), radvdump(8)
114

AUTHORS

116       Pedro Roque    <roque@di.fc.ul.pt> - wrote first version for Linux
117       Lars Fenneberg <lf@elemental.net>  - previous maintainer
118       Nathan Lutchansky   <lutchann@litech.org>    - previous maintainer
119       Pekka Savola   <pekkas@netcore.fi> - current maintainer
120       Craig Metz     <cmetz@inner.net>   - port to NRL's IPv6 code for BSD4.4
121       Marko Myllynen <myllynen@lut.fi>   - RFC 2461 update, Mobile IPv6 support
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125radvd 1.0                         29 Mar 2001                         RADVD(8)
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