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RDISC6(8) System Manager's Manual RDISC6(8)NAME
rdisc - ICMPv6 Router Discovery tool
SYNOPSIS
rdisc6 [-qv] [-r attempts] [-w wait_ms] [ IPv6 address] <iface>
DESCRIPTON
RDisc6 is an Unix program which implements the ICMPv6 Router Discovery in userland (it is normally done by the kernel). It is used to
lookup the list of on-link routers and IPv6 prefixes.
It can also be used to force the kernel to update the state of a given IPv6-autoconfigured network interface.
The name of the network interface to probe routers for must be specified.
OPTIONS -1 or --single
Exit as soon as the first advertisement is received.
-h or --help
Display some help and exit.
-m or --multiple
Wait for possible multiple advertisements and print all of them (default).
-n or --numeric
If the optional parameter is not a valid IPv6 address, do not try to resolve it as a DNS hostname.
-q or --quiet
Only display advertised IPv6 prefixes. Display nothing in case of failure. That is mostly useful when calling the program from a
shell script.
-r attempts or --retry attempts
Send ICMPv6 Router Discovery that many times until a reply is received, or abort. By default, rdisc6 will try 3 times before abort-
ing (MAX_RTR_SOLICITATIONS from RFC2461).
-V or --version
Display program version and license and exit.
-v or --verbose
Display verbose information. That is the default.
-w wait_ms or --wait wait_ms
Wait wait_ms milliseconds for a response before retrying. By default, rdisc6 waits 4 second between each attempts (RTR_SOLICITA-
TION_INTERVAL from RFC2461).
SECURITY
rdisc6 must be setuid root to allow use by non privileged users. It will drop its root privileges before any attempt is made to send or
receive data from the network to reduce the possible impact of a security vulnerability.
SEE ALSO ndisc6(8), ipv6(7)AUTHOR
Remi Denis-Courmont <remi at remlab dot net>
$Id: rdisc6.8 658 2010-10-31 20:56:30Z remi $
http://www.remlab.net/ndisc6/
rdisc6 $Date: 2010-10-31 22:56:30 +0200 (dim. 31 oct. 2010) $ RDISC6(8)