.\"	$OpenBSD: slaacd.8,v 1.10 2018/07/23 11:51:38 florian Exp $
.\"
.\" Copyright (c) 2017 Florian Obser <florian@openbsd.org>
.\" Copyright (c) 2016 Kenneth R Westerback <kwesterback@gmail.com>
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
.\" copyright notice and this permission notice appear in all copies.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.Dd $Mdocdate: July 23 2018 $
.Dt SLAACD 8
.Os
.Sh NAME
.Nm slaacd
.Nd a stateless address autoconfiguration daemon
.Sh SYNOPSIS
.Nm
.Op Fl dv
.Op Fl s Ar socket
.Sh DESCRIPTION
.Nm
is a stateless address autoconfiguration (SLAAC) daemon for clients.
It listens for IPv6 router advertisement messages,
for example those sent by
.Xr rad 8 ,
on interfaces with the
.Sy AUTOCONF6
flag set.
.Nm
derives IPv6 addresses and default routes from received router
advertisements and installs them in the kernel.
See
.Xr hostname.if 5
and
.Xr ifconfig 8
on how to enable auto configuration on an interface.
.Pp
.Nm
monitors network interface states (interface going up or down,
auto configuration enabled or disabled etc.) and sends router solicitations
when necessary.
.Pp
A running
.Nm
can be controlled with the
.Xr slaacctl 8
utility.
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl d
Do not daemonize.
If this option is specified,
.Nm
will run in the foreground and log to
.Em stderr .
.It Fl s Ar socket
Use an alternate location for the default control socket.
.It Fl v
Produce more verbose output.
Multiple
.Fl v
options increase the verbosity.
.El
.Sh FILES
.Bl -tag -width "/dev/slaacd.sockXX" -compact
.It Pa /dev/slaacd.sock
.Ux Ns -domain
socket used for communication with
.Xr slaacctl 8 .
.El
.Sh SEE ALSO
.Xr hostname.if 5 ,
.Xr ifconfig 8 ,
.Xr rad 8 ,
.Xr slaacctl 8
.Sh STANDARDS
.Rs
.%A R. Draves
.%A D. Thaler
.%D November 2005
.%R RFC 4191
.%T Default Router Preferences and More-Specific Routes
.Re
.Pp
.Rs
.%A R. Hinden
.%A S. Deering
.%D February 2006
.%R RFC 4291
.%T IP Version 6 Addressing Architecture
.Re
.Pp
.Rs
.%A T. Narten
.%A E. Nordmark
.%A W. Simpson
.%A H. Soliman
.%D September 2007
.%R RFC 4861
.%T Neighbor Discovery for IP version 6 (IPv6)
.Re
.Pp
.Rs
.%A T. Narten
.%A R. Draves
.%A S. Krishnan
.%D September 2007
.%R RFC 4941
.%T Privacy Extensions for Stateless Address Autoconfiguration in IPv6
.Re
.Pp
.Rs
.%A F. Gont
.%D April 2014
.%R RFC 7217
.%T A Method for Generating Semantically Opaque Interface Identifiers with IPv6 Stateless Address Autoconfiguration (SLAAC)
.Re
.Pp
.Rs
.%A A. Yourtchenko
.%A L. Colitti
.%D February 2016
.%R RFC 7772
.%T Reducing Energy Consumption of Router Advertisements
.Re
.Pp
.Rs
.%A F. Gont
.%A A. Cooper
.%A D. Thaler
.%A W. Liu
.%D February 2017
.%R RFC 8064
.%T Recommendation on Stable IPv6 Interface Identifiers
.Re
.Pp
.Rs
.%A J. Jeong
.%A S. Park
.%A L. Beloeil
.%A S. Madanapalli
.%D March 2017
.%R RFC 8106
.%T IPv6 Router Advertisement Options for DNS Configuration
.Re
.Sh HISTORY
The
.Nm
program first appeared in
.Ox 6.2 .
.Sh AUTHORS
.An -nosplit
The
.Nm
program was written by
.An Florian Obser Aq Mt florian@openbsd.org .