rtradvd(1M)rtradvd(1M)NAMErtradvd - Router Advertisement daemon for IPv6
SYNOPSIS
configfile] debuglevel] pidfile] [debugfile]
DESCRIPTION
the router advertisement daemon for IPv6, implements router functional‐
ity as specified by RFC 2461 ("Neighbor Discovery for IP Version 6").
The daemon listens to router solicitation and sends router advertise‐
ment messages on demand and periodically as described in "Neighbor Dis‐
covery for IP Version 6". These advertisements allow any listening
host to configure their addresses and some other parameters automati‐
cally without manual intervention. They can also choose a default
router based on these advertisements.
Router advertisement is configured on a per interface basis, as
described in rtradvd.conf(4). The "PRIVATE" flag on each interface
must be cleared in order to enable sending Router Advertisement packets
out on that particular interface as described by ifconfig(1M). The
daemon does not listen on an interface when the "PRIVATE" flag is set.
also implements four new Mobile IPv6 ICMPv6 message types, two for use
in the dynamic home agent address discovery mechanism, and two for
mobile configuration mechanisms. These four new ICMPv6 messages are
activated if "Home Agent Flag" (see rtradvd.conf(4)) is enabled on any
configured interface and the daemon detects the Mobile IPv6 kernel mod‐
ule during startup (see mip6mod(7)) or via mip6admin(1M) utility. In
this case, sends the list of prefixes configured with the "Router
Address Flag" set to allowing the node to act as a home agent on all
the links corresponding to these prefixes (see rtradvd.conf(4)).
Options
Specifies that the configuration file will be parsed for syntax
errors and coherency. Any syntax error or inco‐
herency data is printed to will exit with a sta‐
tus 1 if there were any errors or 0 (zero) if
there were not. All other command line options
except are ignored.
Use a configuration file other than
Print debugging information. If
debugfile is not specified, the daemon stays in
foreground mode. A number after the determines
the level of messages printed. The level must be
an integer in the range from 1 to 10, with higher
numbers resulting in greater detail in debug mes‐
sages.
Disable printing the inconsistency information via
syslog(3C) in router advertisement messages
received from other routers on the link.
Use a pid file other than
debugfile Specifies a debug file in which to place debug
information. If a debug file is specified on the
command line, detaches from the terminal and runs
in the background. Otherwise, assumes that
debugging is desired to stderr and remains in the
foreground.
The daemon includes Mobile IPv6 options in Router Advertisement mes‐
sages when the configuration file contains the specific Mobile IPv6
keywords (see rtradvd.conf(4)).
The daemon can be started during boot-time initialization. To do so,
see for entries.
The following signals have the specified effect when sent to the server
process using the kill(1) command:
causes to read the configuration file and reload the data‐
base. If the configuration file contains an error
or inconsistency, the daemon continues with the old
configuration database. The file should be checked
for errors.
terminates gracefully. In this case, before exiting, will
transmit router advertisement with Router Lifetime
0 to all the listening interfaces. This can take
up to 10 seconds.
DIAGNOSTICS
Any errors encountered by in the configuration file, or in normal oper‐
ation are logged via syslog(3C).
NOTE
The following ICMPv6 types are assigned for Mobile IPv6:
Home Agent Address Discovery Request: ICMPv6 type 144
Home Agent Address Discovery Reply: ICMPv6 type 145
Mobile Prefix Solicitation: ICMPv6 type 146
Mobile Prefix Advertisement: ICMPv6 type 147
Refer to the for information on configuring Virtual IPv6 Anycast
addresses.
AUTHOR
was developed by HP.
FILES
The default configuration file
Process ID of running
To enable
at system initialization.
SEE ALSOkill(1), ifconfig(1M), mip6admin(1M), syslog(3C), rtradvd.conf(4),
mip6mod(7), ndp(7P).
1. T. Narten, E. Nordmark, W. Simpson, RFC2461, December 1998.
2. S. Thompson, T. Narten, RFC2462, December 1998.
3. D. Johnson, C. Perkins, IETF document.
rtradvd(1M)
