rtsold should be used on IPv6 hosts (non-router nodes) only.
If you invoke the program as
it will transmit probes from the specified
without becoming a daemon.
In other words,
Specifically, rtsold sends at most 3 Router Solicitations on an interface after one of the following events:
Upon receipt of signal SIGUSR1, rtsold will dump the current internal state into /var/run/rtsold.dump.
The options are as follows:
|Autoprobe outgoing interfaces. rtsold will try to find any non-loopback, non-point-to-point, IPv6-capable interfaces and send router solicitation messages on all of them.
|Enable more debugging including the printing of internal timer information.
|Prevent rtsold from becoming a daemon (foreground mode). Warning messages are generated to standard error instead of syslog(3).
|Explicitly configure the kernel to accept Router Advertisements and disable IPv6 forwarding. These settings are required for proper rtsold operation. Without this option, the current settings will be obeyed; if they are incompatible with proper operation, warning messages will be generated, but Router Solicitations will still be sent. The settings may be changed manually with sysctl(8) and ifconfig(8).
|Enable mobility support. If this option is specified, rtsold 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, rtsold periodically sends Router Solicitation on an interface that does not support SIOCGIFMEDIA ioctl.
|Perform only one probe. Transmit Router Solicitation packets until at least one valid Router Advertisement packet has arrived on each interface, then exit.
|Specifies a supplement script file to handle the Managed Configuration flag of the router advertisement. When the flag changes from FALSE to TRUE, rtsold will invoke script-name with a single argument of the receiving interface name, expecting the script will then start a protocol for the managed configuration. script-name must be the absolute path from root to the script file, be a regular file, and be created by the same owner who runs rtsold.
|Specifies a supplement script file to handle the Other Configuration flag of the router advertisement. When the flag changes from FALSE to TRUE, rtsold will invoke script-name with a single argument of the receiving interface name, expecting the script will then start a protocol for the other configuration. The script will not be run if the Managed Configuration flag in the router advertisement is also TRUE. script-name must be the absolute path from root to the script file, be a regular file, and be created by the same owner who runs rtsold.
|Writes the process ID of rtsold to pidfile instead of the default PID file /var/run/rtsold.pid.
|Specifies a script to run when router advertisement options RDNSS (Recursive DNS Server) or DNSSL (DNS Search List) are encountered. The information of DNS servers and DNS search domains will be sent to standard input of this script. The resolvconf(8) script is used by default.
Specifies whether to add the source address of Router Advertisement
messages to the interface name in the parameters of the RDNSS and DNSSL
Otherwise it will be ‘ifname:slaac’.
|The PID of the currently running rtsold.
|Internal state dump file.
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 rtsold to accept multiple interface arguments.
|August 19, 2020
|I have a natural revulsion to any operating system that shows so little planning as to have to named all of its commands after digestive noises (awk, grep, fsck, nroff).