trouble with DHCP and ipfw -1 fragment rule

[Clark C. Evans]

Hello.  I've got a box which is booting up just fine with
an IP address, but as soon as I change my adapter to DHCP
and reboot it hangs during the initial network setup.
It seems that my router (a LinkSys 4 port DSL hub) is
sending bad packets and triggering the -1 rule.  Then,
the DHCP process just hangs; I can do a CTRL+C to
break out and continue setup.   I'm not sure how to 
proceed debugging this bugger.  Any suggestions?

Clark