[FreeBSD Router (ale)]
[cable modem] <------> [de0/WAN_IP]
                       [de1/10.11.10.1] <--- [Direct Connect to WinXP Workstation]
              -------> [de2/10.11.11.1] <<-- (DHCPd 10.11.11.10-20)
             |         [de3/10.11.12.1] <----------------
             |          ^^                               |
             |         (DHCPd 10.11.12.10-20)            |
  [SMC AP/10.11.11.2]                                    |
      *                                           [Netgear Switch]
      *                                                        |
      *                                                        |
 [OS X iBook (cider)/DHCP]                                     |
                                               [98se (anthony)/DHCP]