1.\" $OpenBSD: dhclient.leases.5,v 1.6 2007/05/31 19:19:43 jmc Exp $ 2.\" $DragonFly: src/sbin/dhclient/dhclient.leases.5,v 1.2 2008/09/01 10:48:29 swildner Exp $ 3.\" 4.\" Copyright (c) 1997 The Internet Software Consortium. 5.\" All rights reserved. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 11.\" 1. Redistributions of source code must retain the above copyright 12.\" notice, this list of conditions and the following disclaimer. 13.\" 2. Redistributions in binary form must reproduce the above copyright 14.\" notice, this list of conditions and the following disclaimer in the 15.\" documentation and/or other materials provided with the distribution. 16.\" 3. Neither the name of The Internet Software Consortium nor the names 17.\" of its contributors may be used to endorse or promote products derived 18.\" from this software without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE INTERNET SOFTWARE CONSORTIUM AND 21.\" CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 22.\" INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 23.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 24.\" DISCLAIMED. IN NO EVENT SHALL THE INTERNET SOFTWARE CONSORTIUM OR 25.\" CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26.\" SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27.\" LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 28.\" USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 29.\" ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30.\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 31.\" OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" This software has been written for the Internet Software Consortium 35.\" by Ted Lemon <mellon@fugue.com> in cooperation with Vixie 36.\" Enterprises. To learn more about the Internet Software Consortium, 37.\" see ``http://www.isc.org/isc''. To learn more about Vixie 38.\" Enterprises, see ``http://www.vix.com''. 39.\" 40.Dd August 30, 2008 41.Dt DHCLIENT.LEASES 5 42.Os 43.Sh NAME 44.Nm dhclient.leases 45.Nd DHCP client lease database 46.Sh DESCRIPTION 47The Internet Software Consortium DHCP client keeps a persistent 48database of leases that it has acquired that are still valid. 49The database is a free-form ASCII file containing one valid declaration 50per lease. 51If more than one declaration appears for a given lease, 52the last one in the file is used. 53The file is written as a log, so this is not an unusual occurrence. 54.Pp 55The lease file is named 56.Qq dhclient.leases.IFNAME , 57where 58.Qq IFNAME 59represents the network interface the DHCP client acquired the lease on. 60For example, if 61.Xr dhclient 8 62is configured for the em0 network device, 63the lease file will be named 64.Qq dhclient.leases.em0 . 65.Pp 66The format of the lease declarations is described in 67.Xr dhclient.conf 5 . 68.Sh FILES 69.Bl -tag -width "/var/db/dhclient.leases.IFNAME " 70.It /var/db/dhclient.leases.IFNAME 71Current lease file. 72.El 73.Sh SEE ALSO 74.Xr dhclient.conf 5 , 75.Xr dhcp-options 5 , 76.Xr dhcpd.conf 5 , 77.Xr dhclient 8 , 78.Xr dhcpd 8 79.Pp 80RFC 2132, RFC 2131. 81.Sh AUTHORS 82.An -nosplit 83.Xr dhclient 8 84was written by 85.An Ted Lemon Aq mellon@vix.com 86under a contract with Vixie Labs. 87.Pp 88The current implementation was reworked by 89.An Henning Brauer Aq henning@openbsd.org . 90