Hi, I believe sometimes its a switch connected physically to the NIC; other times its a software controlled GPIO line from the host to the NIC (eg a keyboard rfkill); sometimes its an ACPI command that controls the GPIO rfkill line; sometimes its smoething else entirely.. :) Arian -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html