Ubuntu – DSL network connection problem in ubuntu

I seem to have found the solution.

I deleted all the previous connections, deleted the configuration file from /etc/network created by pppoeconf and rebooted. Then I set up the wired connection (Automatic ethernet) using the static addresses but made sure it didn't have "connect automatically" checked in the configuration dialog. Then I created a DSL connection, but of all the settings, I only filled in the user name, service name and password for it. I checked "available to all users" and closed the settings dialog. Then from the "connections" applet on the panel, clicked the connection name. And it connected and worked.

Nevertheless, after a couple of reboots, I'm noticing that sometimes it won't connect on the first "click". It'll show notification "Connection established" but I won't have internet access. So I need to disconnect and retry a few times, and eventually it works.

Update: I forgot to mention - I had to set the MTU to 1452 as well.

I finnaly got it working after some hints from here and there. First Enter a 'Locally Administered Address' in Windows environment. Boot in Ubuntu open Network Connection and then in the Wired tab click Auto Ehternet, click "Edit". Enter the Localy Administered Address' in the Clone MAC addr field.

Go to DSL tab setup your connection and enter the same address in Clone Mac adrress field. Click on save. Now when you will click on your DSL connection Wired Network will get disconnected and then then DSL will connect. That's it!