Most DSL modems had us install a PPPoE client and those had us login to the DSL system.
Here's more -> http://en.wikipedia.org/wiki/Point-to-point_protocol_over_Ethernet
To fix this, I install a router which does this automatically. As I do not have any make, model, OS, and which PPPoE client in use, I can't check if there is another solution.
Had trouble with verizon dsl speed that I finally figured out. Now i have to fiddle around reset plus login whenever i start the comp or come out of sleep. Real pita!
Any suggestions would be appreciated for staying logged on. Oldaarpy