.\"	$OpenBSD: dhclient.leases.5,v 1.6 2007/05/31 19:19:43 jmc Exp $
.\"
.\" Copyright (c) 1997 The Internet Software Consortium.
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.\" CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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.\" This software has been written for the Internet Software Consortium
.\" by Ted Lemon <mellon@fugue.com> in cooperation with Vixie
.\" Enterprises.  To learn more about the Internet Software Consortium,
.\" see ``http://www.isc.org/isc''.  To learn more about Vixie
.\" Enterprises, see ``http://www.vix.com''.
.\"
.Dd $Mdocdate: May 31 2007 $
.Dt DHCLIENT.LEASES 5
.Os
.Sh NAME
.Nm dhclient.leases
.Nd DHCP client lease database
.Sh DESCRIPTION
The Internet Software Consortium DHCP client keeps a persistent
database of leases that it has acquired that are still valid.
The database is a free-form ASCII file containing one valid declaration
per lease.
If more than one declaration appears for a given lease,
the last one in the file is used.
The file is written as a log, so this is not an unusual occurrence.
.Pp
The lease file is named
.Qq dhclient.leases.IFNAME ,
where
.Qq IFNAME
represents the network interface the DHCP client acquired the lease on.
For example, if
.Xr dhclient 8
is configured for the em0 network device,
the lease file will be named
.Qq dhclient.leases.em0 .
.Pp
The format of the lease declarations is described in
.Xr dhclient.conf 5 .
.Sh FILES
.Bl -tag -width "/var/db/dhclient.leases.IFNAME   "
.It /var/db/dhclient.leases.IFNAME
Current lease file.
.El
.Sh SEE ALSO
.Xr dhclient.conf 5 ,
.Xr dhcp-options 5 ,
.Xr dhcpd.conf 5 ,
.Xr dhclient 8 ,
.Xr dhcpd 8
.Pp
RFC 2132, RFC 2131.
.Sh AUTHORS
.An -nosplit
.Xr dhclient 8
was written by
.An Ted Lemon Aq mellon@vix.com
under a contract with Vixie Labs.
.Pp
The current implementation was reworked by
.An Henning Brauer Aq henning@openbsd.org .