bootp causes SOA?

My problem:
My LAN dns server is requesting SOA? from an external dns.

Details:
I am running RHL 9.
As I sniff the LAN and the DMZ I see that my Linux Box (acting as router, dns (bind), dhcp, and web server) occasionally gets bootpc requests from a windows box (both 98 and XP are doing this).  Right after the bootpc, the Linux Box makes a SOA? request to the external dns with my domain information.  Then the linux box responds to the windows box with a bootps.  What is going on and how can I stop it?

I've tried:
 - Creating zone entries for each host
 - Entering host info into the Network device control (supposed to override dns)

Related: I would like to integrate dns with dhcp services (dynamic dns?) - can you recommend a good reference?

Thanks in advance,
Chris
Chris_LacyAsked:
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paullamhkgCommented:
Have a read of this forum http://www.linuxquestions.org/questions/archive/3/2003/10/1/97222 someone try the same as you and posted some steps/sample there. Hope can give you hints.

Also have a look here http://ops.ietf.org/dns/dynupd/secure-ddns-howto.html for dynamic dns how to
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