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38 .Nd router solicitation daemon
43 .Op Fl O Ar script-name
45 .Op Fl R Ar script-name
49 .Op Fl O Ar script-name
51 .Op Fl R Ar script-name
55 .Op Fl O Ar script-name
56 .Op Fl R Ar script-name
60 .Op Fl O Ar script-name
61 .Op Fl R Ar script-name
66 is the daemon program to send ICMPv6 Router Solicitation messages
67 on the specified interfaces.
68 If a node (re)attaches to a link,
70 sends some Router Solicitations on the link destined to the link-local scope
71 all-routers multicast address to discover new routers
72 and to get non link-local addresses.
75 should be used on IPv6 hosts
79 If you invoke the program as
81 it will transmit probes from the specified
83 without becoming a daemon.
95 sends at most 3 Router Solicitations on an interface
96 after one of the following events:
100 Just after invocation of
104 The interface is up after a temporary interface failure.
106 detects such failures by periodically probing to see if the status
107 of the interface is active or not.
108 Note that some network cards and drivers do not allow the extraction
112 cannot detect the change of the interface status.
114 Every 60 seconds if the
116 option is specified and the
118 daemon cannot get the interface status.
119 This feature does not conform to the IPv6 neighbor discovery
120 specification, but is provided for mobile stations.
121 The default interval for router advertisements, which is on the order of 10
122 minutes, is slightly long for mobile stations.
123 This feature is provided
124 for such stations so that they can find new routers as soon as possible
125 when they attach to another link.
130 has sent a Router Solicitation, and has received a valid Router Advertisement,
131 it refrains from sending additional solicitations on that interface, until
132 the next time one of the above events occurs.
134 When sending a Router Solicitation on an interface,
136 includes a Source Link-layer address option if the interface
137 has a link-layer address.
140 manages a per-interface parameter to detect if a separate protocol is
141 needed for configuration parameters other than host's addresses.
142 At the invocation time, the flag is FALSE, and becomes TRUE when
143 the daemon receives a router advertisement with the OtherConfig flag
145 A script file can be specified to deal with the case
149 start resending router solicitation messages by one of the conditions
151 the daemon resets the parameter because the event may indicate a
152 change on the attached link.
154 Upon receipt of signal
157 will dump the current internal state into
158 .Pa /var/run/rtsold.dump .
161 The options are as follows:
162 .Bl -tag -width indent
164 Autoprobe outgoing interface.
166 will try to find a non-loopback, non-point-to-point, IPv6-capable interface.
169 finds multiple interfaces,
171 will exit with error.
176 Enable more debugging including the printing of internal timer information.
180 from becoming a daemon (foreground mode).
181 Warning messages are generated to standard error
185 Explicitly configure the kernel to accept Router Advertisements and
186 disable IPv6 forwarding.
187 These settings are required for proper
190 Without this option, the current settings will be obeyed;
191 if they are incompatible with proper operation,
192 warning messages will be generated,
193 but Router Solicitations will still be sent.
194 The settings may be changed manually with
199 Enable mobility support.
200 If this option is specified,
202 sends probing packets to default routers that have advertised Router
204 when the node (re)attaches to an interface.
205 Moreover, if the option is specified,
207 periodically sends Router Solicitation on an interface that does not support
211 Perform only one probe.
212 Transmit Router Solicitation packets until at least one valid Router
213 Advertisement packet has arrived on each
216 .It Fl O Ar script-name
217 Specifies a supplement script file to handle the Other Configuration
218 flag of the router advertisement.
219 When the flag changes from FALSE to TRUE,
223 with a single argument of the receiving interface name,
224 expecting the script will then start a protocol for the other
227 must be the absolute path from root to the script file, be a regular
228 file, and be created by the same owner who runs
231 Writes the process ID of
235 instead of the default PID file
236 .Pa /var/run/rtsold.pid .
237 .It Fl R Ar script-name
238 Specifies a script to run when router advertisement options
239 .Dv RDNSS Pq Recursive DNS Server
241 .Dv DNSSL Pq DNS Search List
243 The information of DNS servers and DNS search domains will be sent to
244 standard input of this script.
247 script is used by default.
249 Specifies whether adding the source address of Router Advertisement
250 messages to the interface name in an argument of the RDNSS and DNSSL
255 is specified, the interface name in the script argument will be
256 .Ql ifname:slaac:[RA-source-address] .
262 .Bl -tag -width /var/run/rtsold.dump -compact
263 .It Pa /var/run/rtsold.pid
264 the pid of the currently running
266 .It Pa /var/run/rtsold.dump
267 dumps internal state on.
281 command is based on the
283 command, which first appeared in WIDE/KAME IPv6 protocol stack kit.
285 is now integrated into
289 In some operating systems, when a PCMCIA network card is removed
290 and reinserted, the corresponding interface index is changed.
293 assumes such changes will not occur, and always uses the index that
294 it got at invocation.
297 may not work if you reinsert a network card.
300 should be killed and restarted.
302 The IPv6 autoconfiguration specification assumes a single-interface host.
303 You may see kernel error messages if you try to autoconfigure a host with
305 Also, it seems contradictory for