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.\" $KAME: dhcp6s.8,v 1.34 2005/03/17 05:27:01 suz Exp $
.\"
.\" Copyright (C) 1998 and 1999 WIDE Project.
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. Neither the name of the project nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.Dd Sep 12, 1999
.Dt DHCP6S 8
.Os KAME
.Sh NAME
.Nm dhcp6s
.Nd DHCPv6 server
.\"
.Sh SYNOPSIS
.Nm
.Op Fl c Ar configfile
.Op Fl Ddf
.Op Fl k Ar ctlkeyfile
.Op Fl p Ar ctlport
.Ar interface
.\"
.Sh DESCRIPTION
.Nm
replies to DHCPv6 client as DHCPv6 server.
.Nm
can give the following information to clients.
.Bl -bullet -compact
.It
IPv6 prefixes for the requesting site
.It
Non-temporary IPv6 addresses
.It
A list of the DNS server addresses
.It
DNS Domain Search List
.It
A list of the NTP server addresses
.It
A list of the SIP server addresses
.It
SIP Server domain name
.El
.Pp
Command line options are as below:
.Bl -tag -width indent
.\"
.It Fl c Ar configfile
Use
.Ar configfile
as the configuration file.
.It Fl d
Print debugging messages.
.It Fl D
Even more debugging information is printed.
.It Fl f
Foreground mode (useful when debugging).
Although
.Nm
usually prints warning, debugging, or error messages to
.Xr syslog 8 ,
it prints the messages to standard error if this option is
specified.
.It Fl k Ar ctlkeyfile
Use
.Ar ctlkeyfile
to store the shared secret to authenticate the communication with
.Nm dhcp6sctl .
The default file name used when unspecified is
.Pa /usr/local/etc/dhcp6sctlkey .
The default name is intentionally same as that for
.Nm dhcp6sctl
so that the server and the control command can share the file when
.Nm dhcp6sctl
controls the server on the same node,
which should be the typical case.
.It Fl p Ar ctlport
Use
.Ar ctlport
as the port number listening on to communicate with
.Nm dhcp6sctl .
.El
.\"
.Sh FILES
.Bl -tag -width /usr/local/etc/dhcp6s.conf -compact
.It Pa /usr/local/etc/dhcp6s.conf
is the default configuration file.
.It Pa /var/db/dhcp6s_duid
is the default file to store the server's DUID.
.It Pa /usr/local/etc/dhcp6sctlkey
is the default key file to communicate with the control command.
See
.Xr dhcp6sctl 8
for the file format.
.El
.\"
.Sh SEE ALSO
.Xr dhcp6s.conf 5 ,
.Xr dhcp6sctl 8 ,
.Xr dhcp6c 8
.Rs
.%A Ralph Droms, Editor
.%D 2003
.%T Dynamic Host Configuration Protocol for IPv6 (DHCPv6)
.%R RFC 3315
.Re
.\"
.Sh HISTORY
The
.Nm
command first appeared in WIDE/KAME IPv6 protocol stack kit.
.Pp
The
.Fl n Ar dnsserv
command-line option was obsoleted by introducing a configuration file.
.\"
.Sh BUGS
.Nm
is incomplete and violates DHCPv6 protocol spec, in several aspects.
To name a few:
.Bl -enum
.It
it does not assign temporary IPv6 addresses
.Pq nor will .
.It
Some of useful option type values are still not officially assigned.
The current implementation uses experimental values,
which may cause interoperability problems with other implementations.
.El
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