One or more of the selected connections is already being used by the Routing and Remote Access service (RRAS) and cannot ...

One or more of the selected connections is already being used by the Routing and Remote Access service (RRAS) and cannot be added to the bridge at this time. Before you can add one of the selected connections, you must disable RRAS.

To open RRAS, click Start, point to Administrative Tools, and then click Routing and Remote Access.