Made by D-Link.
Very good Ethernet ADSL Modem,
Ethernet Modem?? you say. yes!
This wonderful piece of gadgetry uses a type of DHCP spoofing to pass the external IP address allocated to you to your internal ethernet interface. It does this by binding itself to the MAC address of your NIC
These use a framed web page to configure them, so if your linux box is text mode only then you will need to stick the NIC into a windows machine, configure it, then pop the NIC back into your linux box.
I have 1 at home and have sold 2 others that are all working flawlessly under linux on Jetstart, Jetstream and Tempest256 connections.