Important: Only 1 IP Address Available With ADSL or IDSL Single IP Service
Customers of the 144K, 768/128K, or up to 3.0/up to384K single-IP service will receive only one IP address. This should not be a problem for most of the users, who only use one computer with the service. However, some customers who had accidentally received more than one address will see a difference in how the service works.
Customers who use multiple PCs at different times (for example, home and work laptops) will need to make sure that they release the IP address the first PC is using before connecting the second PC to the DSL modem. This is because the DHCP (Dynamic Host Configuration Protocol) server used to assign IP addresses only assigns one address, for seven days at a time, to one device at a time at each location.
To release the IP address, follow the instructions of your particular operating system. Windows users should run winipcfg (Windows 95, 98, and ME) or ipconfig (Windows NT and 2000), select the Ethernet adapter from the drop-down menu, and click on "Release" to release the address. Then you can follow the normal PC configuration instructions for your other PC.