.\"	$OpenBSD: route6d.8,v 1.7 2000/03/04 20:02:24 aaron Exp $
.\"	$KAME: route6d.8,v 1.5 2000/02/25 06:15:05 itojun Exp $
.\"
.\" Copyright (c) 1996 WIDE Project. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modifications, are permitted provided that the above copyright notice
.\" and this paragraph are duplicated in all such forms and that any
.\" documentation, advertising materials, and other materials related to
.\" such distribution and use acknowledge that the software was developed
.\" by the WIDE Project, Japan. The name of the Project may not be used to
.\" endorse or promote products derived from this software without
.\" specific prior written permission. THIS SOFTWARE IS PROVIDED ``AS IS''
.\" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
.\" LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
.\" A PARTICULAR PURPOSE.
.Dd January 31, 1997
.Dt ROUTE6D 8
.Os
.Sh NAME
.Nm route6d
.Nd RIP6 Routing Daemon
.Sh SYNOPSIS
.Nm route6d
.Op Fl adDhlqsS
.Op Fl R Ar routelog
.Op Fl A Ar prefix/preflen,if1[,if2...]
.Op Fl L Ar prefix/preflen,if1[,if2...]
.Op Fl N Ar if1[,if2...]
.Op Fl O Ar prefix/preflen,if1[,if2...]
.Op Fl T Ar if1[,if2...]
.Op Fl t Ar tag
.\"
.Sh DESCRIPTION
The
.Nm
is a routing daemon which supports RIP over IPv6.
.Pp
The options are as follows:
.Bl -tag -width indent
.\"
.It Fl a
Enables aging of the statically defined routes.
With this option, any
statically defined routes will be removed unless corresponding updates
arrive as if the routes are received at the startup of
.Nm route6d .
.\"
.It Fl R Ar routelog
This option makes the
.Nm
to log the route change (add/delete) to the file
.Ar routelog .
.\"
.It Fl A Ar prefix/preflen,if1[,if2...]
This option is used for aggregating routes.
.Ar prefix/preflen
specifies the prefix and the prefix length of the
aggregated route.
When advertising routes,
.Nm
filters specific routes covered by the aggregate,
and advertises the aggregated route
.Ar prefix/preflen ,
to the interfaces specified in the comma-separated interface list,
.Ar if1[,if2...] .
.Nm
creates a static route to
.Ar prefix/preflen
with
.Dv RTF_REJECT
flag, into the kernel routing table.
.\"
.It Fl d
Enables output of debugging message.
This option also instructs
.Nm
to run in foreground mode
.Pq does not become daemon .
.\"
.It Fl D
Enables extensive output of debugging message.
This option also instructs
.Nm
to run in foreground mode
.Pq does not become daemon .
.\"
.It Fl h
Disables the split horizon processing.
.\"
.It Fl l
By default,
.Nm
will not exchange site local routes for safety reasons.
This is because semantics of site local address space is rather vague,
and there is no good way to define site local boundary.
With
.Fl l
option,
.Nm
will exchange site local routes as well.
It must not be used on site boundary routers,
since
.Fl l
option assumes that all interfaces are in the same site.
.\"
.It Fl L Ar prefix/preflen,if1[,if2...]
Filter incoming routes from interfaces
.Ar if1,[if2...] .
.Nm
will accept incoming routes that are in
.Ar prefix/preflen .
If multiple
.Fl L
options are specified, any routes that match one of the options is accepted.
.Li ::/0
is treated specially as default route, not
.Do
any route that has longer prefix length than, or equal to 0
.Dc .
If you would like to accept any route, specify no
.Fl L
option.
For example, with
.Do
.Fl L
.Li 3ffe::/16,if1
.Fl L
.Li ::/0,if1
.Dc
.Nm
will accept default route and routes in 6bone test address, but no others.
.\"
.It Fl N Ar if1[,if2...]
Do not listen to, or advertise, route from/to interfaces specified by
.Ar if1,[if2...] .
.\"
.It Fl O Ar prefix/preflen,if1[,if2...]
Restrict route advertisement toward interfaces specified by
.Ar if1,[if2...] .
With this option
.Nm
will only advertise routes that matches
.Ar prefix/preflen .
.\"
.It Fl q
Makes
.Nm
in listen-only mode.
No advertisement is sent.
.\"
.It Fl s
Makes
.Nm
to advertise the statically defined routes which exist in the kernel routing
table when
.Nm
invoked.
Announcements obey the regular split horizon rule.
.\"
.It Fl S
This option is the same as
.Fl s
option except that no split horizon rule does apply.
.\"
.It Fl T Ar if1[,if2...]
Advertise only default route, toward
.Ar if1,[if2...] .
.\"
.It Fl t Ar tag
Attach route tag
.Ar tag
to originated route entries.
.Ar tag
can be decimal, octal prefixed by
.Li 0 ,
or hexadecimal prefixed by
.Li 0x .
.\"
.El
.Pp
Upon receipt of signal
.Dv SIGINT
or
.Dv SIGUSR1 ,
.Nm
will dump the current internal state into
.Pa /var/run/route6d_dump .
.\"
.Sh FILES
.Bl -tag -width /var/run/route6d_dump -compact
.It Pa /var/run/route6d_dump
dumps internal state on
.Dv SIGINT
or
.Dv SIGUSR1
.El
.\"
.Sh SEE ALSO
.Rs
.%A G. Malkin
.%A R. Minnear
.%T RIPng for IPv6
.%R RFC2080
.%D January 1997
.Re
.\"
.Sh NOTE
.Nm Route6d
uses IPv6 advanced API,
defined in RFC2292,
for communicating with peers using link-local addresses.
.Pp
Internally
.Nm
embeds interface identifier into bit 32 to 63 of link-local addresses
.Po
.Li fe80::xx
and
.Li ff02::xx
.Pc
so they will be visible on internal state dump file
.Pq Pa /var/run/route6d_dump .
.Pp
Routing table manipulation differs from IPv6 implementation to implementation.
Currently
.Nm
obeys WIDE Hydrangea/KAME IPv6 kernel,
and will not be able to run on other platforms.
.Pp
Current
.Nm
does not reduce the rate of the triggered updates when consecutive updates
arrive.