"already exists" logging question

Raymond Drew Walker Ray.Walker at nau.edu
Tue Mar 13 17:46:52 UTC 2012

Anyone care to chime in on this?

Raymond Walker
Software Systems Engineer Sr.
ITS Northern Arizona University

-----Original Message-----
From: Raymond Walker <Ray.Walker at nau.edu>
Reply-To: Users of ISC DHCP <dhcp-users at lists.isc.org>
Date: Thu, 1 Mar 2012 22:59:12 +0000
To: "dhcp-users at lists.isc.org" <dhcp-users at lists.isc.org>
Subject: "already exists" logging question

>After upgrading from 3.0.x to 4.2.x we have been noticing logs like such
>when restarting the DHCP service:
>03/01/2012 15:09:41 /usr/local/opt/dhcpd/dhcp.leases line 792: host
>student24453.student.nau.edu-dynamic: already exists
>03/01/2012 15:09:41 }
>03/01/2012 15:09:41  ^
>While the client seems to be recieving a proper IP and functioning as
>expected, I could not find any information on this log. It seems that the
>number of these logs grow as DHCP traffic increases, which is our current
>When examining the dhcp.leases and dhcp.leases~ files, all associated
>entries including reverse lookup seem to be correct and no duplicates (to
>my knowledge) are found. I could provide specific information if
>Could someone explain why this happens, and suggested methods to eliminate
>it if necessary?
>Raymond Walker
>Software Systems Engineer Sr.
>ITS Northern Arizona University
>dhcp-users mailing list
>dhcp-users at lists.isc.org

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