If you take the default DHCP option, you'll get the behavior you saw. I believe that if you had assigned a static IP at install time, you would have seen the behavior you expected.
-- Aleksandar Milivojevic <amilivojevic pbl ca> Pollard Banknote Limited Systems Administrator 1499 Buffalo Place Tel: (204) 474-2323 ext 276 Winnipeg, MB R3T 1L7