simulating dhcp requests?

[Jiann-Ming Su]

Is there a way to use dhclient to simulate a bunch of dhcp requests?
I'm trying to do a load test on our dhcp configuration.  But, dhclient
want to bind to an existing interface.  The other way I've briefly
considered is to generate the dhcprequest through the existing
interface and using linux netfilter to spoof random MAC addresses.
Thanks for any tips.

-- 
Jiann-Ming Su
"I have to decide between two equally frightening options.
 If I wanted to do that, I'd vote." --Duckman
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the bath water.  You got to throw 'em both out."  --Dale Gribble