1.\" $OpenBSD: dhclient.leases.5,v 1.4 2004/04/15 08:59:47 jmc Exp $ 2.\" 3.\" Copyright (c) 1997 The Internet Software Consortium. 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 3. Neither the name of The Internet Software Consortium nor the names 16.\" of its contributors may be used to endorse or promote products derived 17.\" from this software without specific prior written permission. 18.\" 19.\" THIS SOFTWARE IS PROVIDED BY THE INTERNET SOFTWARE CONSORTIUM AND 20.\" CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 21.\" INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 22.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 23.\" DISCLAIMED. IN NO EVENT SHALL THE INTERNET SOFTWARE CONSORTIUM OR 24.\" CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 25.\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 26.\" LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 27.\" USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 28.\" ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29.\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 30.\" OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31.\" SUCH DAMAGE. 32.\" 33.\" This software has been written for the Internet Software Consortium 34.\" by Ted Lemon <mellon@fugue.com> in cooperation with Vixie 35.\" Enterprises. To learn more about the Internet Software Consortium, 36.\" see ``http://www.isc.org/isc''. To learn more about Vixie 37.\" Enterprises, see ``http://www.vix.com''. 38.\" 39.Dd January 1, 1997 40.Dt DHCLIENT.LEASES 5 41.Os 42.Sh NAME 43.Nm dhclient.leases 44.Nd DHCP client lease database 45.Sh DESCRIPTION 46The Internet Software Consortium DHCP client keeps a persistent 47database of leases that it has acquired that are still valid. 48The database is a free-form ASCII file containing one valid declaration 49per lease. 50If more than one declaration appears for a given lease, 51the last one in the file is used. 52The file is written as a log, so this is not an unusual occurrence. 53.Pp 54The lease file is named 55.Pa dhclient.leases . Ns Ar IFNAME , 56where 57.Ar IFNAME 58represents the network interface the DHCP client acquired the lease on. 59For example, if 60.Xr dhclient 8 61is configured for the 62.Li em0 63network device, 64the lease file will be named 65.Pa dhclient.leases.em0 . 66.Pp 67The format of the lease declarations is described in 68.Xr dhclient.conf 5 . 69.Sh FILES 70.Bl -tag -width ".Pa /var/db/dhclient.leases. Ns Ar IFNAME" 71.It Pa /var/db/dhclient.leases . Ns Ar IFNAME 72Current lease file. 73.El 74.Sh SEE ALSO 75.Xr dhclient.conf 5 , 76.Xr dhcp-options 5 , 77.Xr dhcpd.conf 5 , 78.Xr dhclient 8 , 79.Xr dhcpd 8 80.Rs 81.%R "RFC 2132, RFC 2131" 82.Re 83.Sh AUTHORS 84.An -nosplit 85The 86.Xr dhclient 8 87utility 88was written by 89.An Ted Lemon Aq Mt mellon@vix.com 90under a contract with Vixie Labs. 91.Pp 92The current implementation was reworked by 93.An Henning Brauer Aq Mt henning@openbsd.org . 94