Description: If the value of this variable is set to 1, the PPP connection established through the interface given by the index will be disconnect and the DNS probe given by the other index will be started once the PPP connection restablishes. In GET operations, the value taken by this variable indicates the result of the last operation: ok (2), if the last operation was made succesfully; the value undefined (3) indicates that operations of this type have not been made yet. If the operation failed, this variable could take different values depending on the error cause: no-memory (4), if there was not enough memory to start the DNS probe; wrong-identifier(5) if the probe identifier introduced was not correct; already-started (6) indicates that the probe which was going to be started was started previously and is in execution; dns-uninitialized (7) if the DNS system has not been initialized; error (8) if another generic error has occurred.