This one looks like it would be easy but I gues it's not. The only hint I can give is from the man bootpd page and maybe this would apply to the Ignite server's configuration. So check /etc/dhcpdeny and /etc/bootptab files. Remember when you setup up and Ignite server it functions as a dhcp/bootp server as well:
When bootpd receives a DHCP/BOOTP request, it first checks if the
hardware address of the client is listed in the /etc/dhcpdeny
database. If yes, this client is denied lease. If the client is not
listed in the dhcpdeny database, it checks whether the client
information is in the /etc/bootptab database. If the client
information is available, bootpd sends back the reply. Otherwise, it
checks whether there is any matched relay information for the client
in the /etc/bootptab database. If so, bootpd goes through a series of
checks to see if it should relay the request. If no matched relay
information was found, bootpd checks whether the client information is
matched by a pool or device group in the /etc/dhcptab database. If a
match is found, bootpd sends back a reply. The request is dropped if
no matched group information is found.
If it has wheels or a skirt, you can't afford it.
