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

NAME

6       radvd - router advertisement daemon for IPv6
7

SYNOPSIS

9       radvd [ -hsvc ] [ -d debuglevel ] [ -C configfile ] [ -p pidfile ] [ -m
10       logmethod ] [ -l logfile ] [ -n nodaemon ] [ -f facility ] [ -t chroot‐
11       dir ] [ -u username ]
12
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 4861).  With these advertise‐
18       ments hosts can automatically configure their addresses and some  other
19       parameters.  It  also defines "Neighbor Discovery Optimization for IPv6
20       over Low-Power Wireless Personal Area Networks  (6LoWPANs)"  (RFC6775).
21       They also can choose a default router based on these advertisements.
22
23       The  configuration file must not be writable by others, and if non-root
24       operation is requested, not even by self/own group.
25
26

OPTIONS

28       For every one character option there is also a long  option,  which  is
29       listed right next to the "short" option name:
30
31
32       -v, --version
33              Displays the version of radvd and then aborts.
34
35       -h, --help
36              Displays a short usage description and then aborts.
37
38       -c, --configtest
39              Test configuration and do startup tests and then exit.
40
41       -n, --nodaemon
42              Prevent the daemonizing.
43
44       -d debuglevel, --debug debuglevel
45              With  this  option you turn on debugging information. The debug‐
46              ging level is an integer in the range from 1 to 5,  from   quiet
47              to very verbose. A debugging level of 0 completely turns off de‐
48              bugging. If a debugging level greater  than  0  is  used,  radvd
49              doesn't  background itself on start. The default debugging level
50              is 0.
51
52       -C configfile, --config configfile
53              Specifies an alternate config file. Normally the compiled in de‐
54              fault /etc/radvd.conf is used.
55
56       -p pidfile, --pidfile pidfile
57              Specifies an alternate pidfile. Normally the compiled in default
58              /run/radvd/radvd.pid is used.
59
60       -m method, --logmethod method
61              Specifies the logging method to use. Possibly values are:
62
63              none   Completely disables any logging.
64
65              logfile
66                     Logs to the logfile which is specified by the -l  option.
67                     If  no  logfile  is specified on the command line, then a
68                     compiled in default is used (see next option).
69
70              stderr Logs to standard error.
71
72              stderr_syslog
73                     Logs only the high messages (of at least  LOG_ERR  prior‐
74                     ity) to standard error, and everything to syslog (default
75                     method).
76
77              syslog Logs to syslog.
78
79       -l logfile, --logfile logfile
80              Specifies the logfile to use when using the logging method  log‐
81              file.  The default logfile is /var/log/radvd.log.
82
83       -f facility, --facility facility
84              Specifies  the  facility  (as an integer) when using syslog log‐
85              ging. Default is LOG_DAEMON.
86
87       -t chrootdir, --chrootdir chrootdir
88              If specified, switches to chrootdir before doing anything  else.
89              This  directory  and its subdirectories must have been populated
90              first.  For security reasons, -u must always be used when  using
91              chrootdir.
92
93              Note  that  on Linux radvd requires access to the /proc filesys‐
94              tem, so it is more challenging to set up the chroot environment.
95
96       -u username, --username username
97              If specified, drops root privileges and changes user ID to user‐
98              name  and  group  ID  to the primary group of username.  This is
99              recommended for security reasons.  You might also need to use -p
100              to  point  to  a  file  in  a username -writable directory (e.g.
101              /var/run/radvd/radvd.pid).
102

FILES

104       /usr/sbin/radvd
105       /etc/radvd.conf
106       /run/radvd/radvd.pid
107       /var/log/radvd.log
108

BUGS

110       There certainly are some bugs. If you find them or have  other  sugges‐
111       tions please contact Reuben Hawkins <reubenhwk@gmail.com>.
112
113

SEE ALSO

115       radvd.conf(5), radvdump(8)
116

AUTHORS

118       Pedro Roque    <roque@di.fc.ul.pt> - wrote first version for Linux
119       Lars Fenneberg <lf@elemental.net>  - previous maintainer
120       Nathan Lutchansky   <lutchann@litech.org>    - previous maintainer
121       Pekka Savola   <pekkas@netcore.fi>     - previous maintainer
122       Craig Metz     <cmetz@inner.net>   - port to NRL's IPv6 code for BSD4.4
123       Marko Myllynen <myllynen@lut.fi>   - RFC 2461 update, Mobile IPv6 support
124       Jim Paris <jim@jtan.com>      - Privilege separation support
125       Reuben Hawkins  <reubenhwk@gmail.com>   - current maintainer
126       Pierre Ossman   <pierre@ossman.eu>      - RFC6106 (DNSSL) support
127       Varka Bhadram  <varkabhadram@gmail.com> - 6LoWPAN-ND (RFC6775) support
128       Robin H. Johnson    <robbat2@gentoo.org>     - RA splitting per RFC 6980 & RFC4861#6.2.3
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132radvd 2.19                        14 Dec 2010                         RADVD(8)
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