Error 769 - The specified destination is
Error also titled, "Either you specified a destination address that is not valid, or your remote server is down."
This can be an error related to your PPPoE client. PPPoE is the authentication protocol favoured by DSL/ADSL providers.
in the PPPoE client, you need to supply your username, password and desination authentication server IP (or name) in
many cases.. Since it's a client, with drop down menu's many times customer will accidentally pick the wrong
provider/authentication server from the drop down menu.. Doublecheck your settings in the client and give it a shot