|RTSOLD(8)||System Manager's Manual||RTSOLD(8)|
rtsold — router
rtsold is the daemon program to send
ICMPv6 Router Solicitation messages on the specified interfaces. If a node
(re)attaches to a link,
rtsold sends some Router
Solicitations on the link destined to the link-local scope all-routers
multicast address to discover new routers and to get non link-local
rtsold should be used on IPv6 hosts
(non-router nodes) only. The net.inet6.ip6.forwarding
sysctl(8) should be set to
zero and the net.inet6.ip6.accept_rtadv and
sysctl(8) should be set to a
non-zero value (see also the
-F option below).
If you invoke the program as
will transmit probes from the specified interface,
without becoming a daemon. In other words,
behaves as “rtsold -f1 interface ...”.
An interface may be configured at boot to be brought up using
rtsol via a
hostname.if(5) file. See
that man page for more information.
rtsold sends at most 3 Router
Solicitations on an interface after one of the following events:
rtsolddetects such failures by periodically probing to see if the status of the interface is active or not. Note that some network cards and drivers do not allow the extraction of link state. In such cases,
rtsoldcannot detect the change of the interface status.
-moption is specified and the
rtsolddaemon cannot get the interface status. This feature does not conform to the IPv6 neighbor discovery specification, but is provided for mobile stations. The default interval for router advertisements, which is on the order of 10 minutes, is slightly long for mobile stations. This feature is provided for such stations so that they can find new routers as soon as possible when they attach to another link.
rtsold has sent a Router
Solicitation, and has received a valid Router Advertisement, it refrains
from sending additional solicitations on that interface, until the next time
one of the above events occurs.
When sending a Router Solicitation on an interface,
rtsold includes a Source Link-layer address option
if the interface has a link-layer address.
rtsold is able to do some additional
configuration for interfaces where more than setting the host's address is
needed. When the daemon receives a router advertisement with the
“Other Configuration” flag set, the script specified using the
-O option is run.
Upon receipt of signal
rtsold will dump the current internal state into
The options are as follows:
rtsoldwill try to find a non-loopback, non-point-to-point, IPv6-capable interface. If
rtsoldfinds multiple interfaces,
rtsoldwill exit with error.
-doption) including the printing of internal timer information.
rtsold(see above). Without this option,
rtsoldwill obey the current sysctl(8) settings.
rtsoldfrom becoming a daemon (foreground mode). Warning messages are generated to standard error instead of syslog(3).
rtsoldsends probing packets to default routers that have advertised Router Advertisements when the node (re)attaches to an interface. Moreover, if the option is specified,
rtsoldperiodically sends Router Solicitation on an interface that does not support
rtsold utility exits 0 on
success, and >0 if an error occurs.
rtsold command is based on the
rtsol command, which first appeared in WIDE/KAME
IPv6 protocol stack kit.
rtsol is now integrated
In some operating systems, when a PCMCIA network card is removed
and reinserted, the corresponding interface index is changed. However,
rtsold assumes such changes will not occur, and
always uses the index that it got at invocation. As a result,
rtsold may not work if you reinsert a network card.
In such a case,
rtsold should be killed and
The IPv6 autoconfiguration specification assumes a
single-interface host. You may see kernel error messages if you try to
autoconfigure a host with multiple interfaces. Also, it seems contradictory
rtsold to accept multiple
|March 23, 2011||OpenBSD-5.1|