said by cshake 
:I set it up this way originally because the modem only worked when a PC was connected with their software suite that 'registered' the username and password for the account. It kept track of the MAC address of this 'authorized' computer for the account after it had entered the account details, and I was only able to connect the router and have the DSL work when I turned on MAC spoofing to duplicate the PC's network card.
Don't know what this is about as I've never heard of it since PPPoE does not use MAC IDs for authentication. It uses PPP. Just like a dial-up connection. That sounds like misconfiguration again as I know Windstream doesn't use MAC IDs. That is usually a Cable Broadband issue only since they use DHCP to assign one PC (behind the Cable Modem) the one Public IP that the Account is allowed.
