Multiple IP Addresses for a single MAC address

[daniel.bender at unlv.edu]

Can anyone shed some light on the following problem we are encountering?

                Multiple IP Addresses for a single MAC address

        We are using PXE to reimage a number of PC's(as many as 30-50
at a time) and are supplying the PXE boot server address and filename
using ISCDHCP.  As each PC is booting, an address is issued based on
a discover sent from the NIC initialization and then a second address
is issued based on a discover sent sometime during the initialization
of the image.
Frequently while doing ths since there are two addresses being
consumed by each PC, so many IP addresses are used that we
run out of address and of course other PC's which may have been powered
off and now are begin powered up are unable to get an address issued.

        ISCDHCP Version:        3.1.0
        OS Version:             Solaris 10 11/06 s10s_u3wos_10 SPARC

Also attached are the dhcpd.leases file and the output of dhcpd -d.

--------------------Content of dhcpd.conf file ---------------------
ddns-update-style none;

ping-check on;

#deny bootp;

option domain-name-servers 131.216.162.10, 131.216.162.96, 131.216.1.11;
option domain-name "library.unlv.edu";

#always-broadcast off;
#stash-agent-options on;

subnet 10.249.2.0 netmask 255.255.255.0
        {
        authoritative;
        pool
                {
                range 10.249.2.221 10.249.2.230;
                option routers 10.249.2.1;
                default-lease-time 300;
                max-lease-time  300;
                filename "pxelinux.0";
                next-server 131.216.162.9;
                }

        }

subnet 131.216.162.0 netmask 255.255.255.0
        {
        }

------------------------------End of dhcpd.conf-----------------------


(See attached file: dhcpd-d.out2)(See attached file: dhcpd.leases.txt)


Thanks for any help.



************************************************************
** Daniel C. Bender
** System Administrator
** Lied Library - Systems
** University Of Nevada-Las Vegas
** Email:              daniel.bender at unlv.edu
** Telephone:     702 895-2169
************************************************************
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