.\"	$OpenBSD: dhcpleased.8,v 1.7 2024/08/11 06:07:37 jmc Exp $
.\"
.\" Copyright (c) 2021 Florian Obser <florian@openbsd.org>
.\"
.\" 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: August 11 2024 $
.Dt DHCPLEASED 8
.Os
.Sh NAME
.Nm dhcpleased
.Nd Dynamic Host Configuration Protocol (DHCP) client
.Sh SYNOPSIS
.Nm
.Op Fl dnv
.Op Fl f Ar file
.Op Fl s Ar socket
.Sh DESCRIPTION
.Nm
is a dynamic host configuration protocol (DHCP) daemon for clients.
If an interface has the
.Sy AUTOCONF4
flag set
(auto configuration is enabled),
.Nm
sends requests for IP configuration information from a DHCP server,
such as
.Xr dhcpd 8 ,
and uses that information to configure the relevant interface.
.Pp
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 requests
when necessary.
A running
.Nm
can be controlled with the
.Xr dhcpleasectl 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 f Ar file
Specify an alternative configuration file.
.It Fl n
Configtest mode.
Only check the configuration file for validity.
.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 "/var/db/dhcpleased/<if>" -compact
.It Pa /dev/dhcpleased.sock
.Ux Ns -domain
socket used for communication with
.Xr dhcpleasectl 8 .
.It Pa /etc/dhcpleased.conf
Default
.Nm
configuration file.
.It Pa /var/db/dhcpleased/ Ns Aq Ar if
Interface specific lease files.
.El
.Sh SEE ALSO
.Xr dhcpleased.conf 5 ,
.Xr hostname.if 5 ,
.Xr dhcpd 8 ,
.Xr dhcpleasectl 8 ,
.Xr ifconfig 8
.Sh STANDARDS
.Rs
.%A R. Droms
.%D March 1997
.%R RFC 2131
.%T Dynamic Host Configuration Protocol
.Re
.Pp
.Rs
.%A S. Alexander
.%A R. Droms
.%D March 1997
.%R RFC 2132
.%T DHCP Options and BOOTP Vendor Extensions
.Re
.Sh HISTORY
The
.Nm
program first appeared in
.Ox 6.9 .
.Sh AUTHORS
.An -nosplit
The
.Nm
program was written by
.An Florian Obser Aq Mt florian@openbsd.org .