Depending on what sort of DHCP server you use, you could tie the Empeg's MAC address to a static IP and everytime you connect it to the network, it would get the same IP even though to the Empeg, it would seem dynamic.
I use a dual NIC linux box at home for my firewall/router chores and that's how I have my whole network setup. Every PC gets the same IP address every time they boot up but to the PC's, it's all still plain DHCP.
Of course, if you work somewhere where this isn't possible, please disregard this