an easy way to make a reconnect.bat is to use Router Control ( http://www.routercontrol.de/ ) <- german tool BUT you can set the language to english download; install; search your router; enter ip adress, username (if needed) and password (as i can see your router works with it)
Each IP may be used only twice on the same server. Each IP may only be used a single time for a give brute on a given server. Therefore you must change IP everytime before creating a new pupil.