My bad... I added the line ifconfig eth0 10.0.0.12 netmask 255.255.255.0 10.0.0.255 to /etc/init.d/dhcp3-server. I commented it out, and the problem went away. Even stranger... Removing the line didn't break the DHCP server. <shrug> It all seems to work now. ("Seems to work" is the key part here...) Now, IP forwarding... ;-) William