Radvd-Linux man page
Radvd-Router Advertisement daemon for IPv6
Radvd [-VL] [-d Debuglevel ] [-CConfigfile] [-P Pidfile ] [-MLogmethod ] [-L Logfile ] [-FFacility ] [-T Chrootdir ] [-UUsername ]
RadvdIs the router advertisement daemon for IPv6. It listens to router solicitationsand sends router advertisements as described in "Neighbor Discovery for IP version 6 (IPv6)" (RFC 2461 ). with these advertisements hosts can automaticallyconfigure their addresses and some other parameters. they also can choose a default router based on these advertisements.
Note that if debugging is not enabled,RadvdWill not start if IPv6 Forwarding is disabled. IPv6 forwarding can be controlledSysctl(8),Net. ipv6.conf. All. ForwardingOn Linux orNet. inet6.ip6. ForwardingOn BSD.
Similarly, the configuration file must not be writable by others, and if non-root operation is requested, not even by self/own group.
For every one character option there is also a long option, which is listed right next to the "short" option Name:
Displays the version
RadvdAnd then aborts.
Displays a short usage description and then aborts.
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 debugginglevel of 0 completely turns off debugging. if a debugging level greater than 0 is used,
RadvdDoesn't background itself on start. The default debugginglevel is 0.
Specifies an alternate config file. Normally the compiled in default
/Etc/radvd. confIs used.
Specifies an alternate pidfile. Normally the compiled in default
/Var/run/radvd. PIDIs used.
Specifies the logging method to use. Possibly values are:
Completely disables any logging.
Logs to the logfile which is specified by
-LOption. If no logfile is specified on the command line, then a compiled in default is used (seenext option ).
Logs to standard error.
Logs only the high messages (of at least log_err priority) to standard error, and everything to syslog (default method ).
Logs to syslog.
Specifies the logfile to use when using the logging method
Logfile. The default logfile is
Specifies the facility (as an integer) when using syslog logging. Default is log_daemon.
If specified, switches
ChrootdirBefore doing anything else. This directory and Its subdirectories must have been populated first. For securityreasons,
-UMust always be used when using
Note that on LinuxRadvdRequires access to/ProcFilesystem, so it is more challenging to set up the chroot environment.
If specified, drops root privileges and changes user ID
UsernameAnd group ID to the primary group
Username. This is recommended forsecurity reasons. You might also need to use
-PTo point to a file in
Username-Writable directory (e.g./var/run/radvd. PID ).