NAME
rrttssoolldd - router solicitation daemon
SYNOPSIS
rrttssoolldd [-ddDDffmm11] interface ...
rrttssoolldd [-ddDDffmm11] -aa
rrttssooll [-ddDD] interface ...
rrttssooll [-ddDD] -aa
DESCRIPTION
rrttssoolldd is the daemon program to send ICMPv6 Router Solicitation messages on the specified interfaces. If a node (re)attaches to a link, rrttssoollddsends 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 addresses.
rrttssoolldd should be used on IPv6 hosts (non-router nodes) only.
If you invoke the program as rrttssooll, it will transmit probes from the specified interface, without becoming a daemon. In other words, rrttssoollbehaves as ``rrttssoolldd -ff11 interfaces''.
Specifically, rrttssoolldd sends at most 3 Router Solicitations on an interface after one of the following events: ++oo Just after invocation of rrttssoolldd daemon. ++oo The interface is up after a temporary interface failure. rrttssoolldd detects 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, rrttssoolldd cannot detect the change of the interface status.++oo Every 60 seconds if the -mm option is specified and the rrttssoolldd daemon
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. Once rrttssoolldd 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, rrttssoolldd includes aSource Link-layer address option if the interface has a link-layer
address. Upon receipt of signal SIGUSR1, rrttssoolldd will dump the current internalstate into /var/run/rtsold.dump.
OOPPTTIIOONNSS-aa Autoprobe outgoing interface. rrttssoolldd will try to find a non-
loopback, non-point-to-point, IPv6-capable interface. If rrttssoolldd
finds multiple interfaces, rrttssoolldd will exit with error.-dd Enable debugging.
-DD Enable more debugging including the printing of internal timer
information.-ff -ff prevents rrttssoolldd from becoming a daemon (foreground mode).
Warning messages are generated to standard error instead of syslog(3).-mm Enable mobility support. If this option is specified, rrttssoolldd
sends probing packets to default routers that have advertised Router Advertisements when the node (re)attaches to an interface. Moreover, if the option is specified, rrttssoolldd periodically sends Router Solicitation on an interface that does not support SIOCGIFMEDIA ioctl.-11 Perform only one probe. Transmit Router Solicitation packets
until at least one valid Router Advertisement packet has arrived on each interface, then exit. DIAGNOSTICS The rrttssoolldd utility exits 0 on success, and >0 if an error occurs. FILES/var/run/rtsold.pid the pid of the currently running rrttssoolldd.
/var/run/rtsold.dump dumps internal state on.
SEE ALSO
rtadvd(8), sysctl(8) HISTORY The rrttssoolldd command is based on the rrttssooll command, which first appeared in WIDE/KAME IPv6 protocol stack kit. rrttssooll is now integrated intortsold(8).
BUGS
In some operating systems, when a PCMCIA network card is removed and reinserted, the corresponding interface index is changed. However, rrttssoolldd assumes such changes will not occur, and always uses the indexthat it got at invocation. As a result, rrttssoolldd may not work if you rein-
sert a network card. In such a case, rrttssoolldd should be killed and restarted.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 for rrttssoolldd to accept multiple interface arguments. BSD May 17, 1998 BSD