Linksys WET11 does not acquire or pass DHCP addresses

I am trying to get one of the Linksys WET11's to bridge a couple
desktops to the rest of my home network. The problem is that the
WET11 does not acquire a DHCP address from my Linux server running ISC
DHCPd. (Diagram of my network below)

While watching the syslog, I can see the WET11's MAC address appear
along with the DHCP requests, like this:

Jul 17 12:46:08 piglet dhcpd: DHCPDISCOVER from 00:06:25:45:78:d5 via
eth1
Jul 17 12:46:09 piglet dhcpd: DHCPOFFER on 192.168.0.8 to
00:06:25:45:78:d5 via eth1

The problem is that the WET11 never makes its DHCPREQUEST back to the
server. I can set a static IP address for the WET11 just fine, but
the clients connected to the WET11 have the same behavior as the
above.

The WET11 is configured in infrastructure mode and otherwise seems to
be working. It is version 1, and the latest firmware. The WAP11 is
also v.1 and the latest firmware. I have two of the WET11's and they
both exhibit the same behavior.

any ideas?
K


Diagram Legend
| denotes wired link
} denotes wireless link

Internet
|
Motorola Cable Modem
|
XUbuntu Linux server
2 Ethernet Interfaces
Shorewall / IPTables
ISC DHCP server
|
Linksys 10/100 Hub
|
Linksys WAP11 v 1.0 (not running DHCP)
}
Linksys WET 11
|
10/100 switch
|
Desktop clients