Abstract: A method for dynamically determining a media type of a LAN to which a network device is connected, includes executing at least one network interface driver which supports a predefined network media type, and which has one or more configuration tables and one or more logical boards for processing communication packets having different frame types. Each configuration table is associated with one of the boards, which each includes a frame type identifying value that identifies a combination of frame type and media type for packets processed by the corresponding board. A multiplexer software module is executed, which interfaces between the network interface driver and one or more protocol stacks, and which routes packets from the network interface driver to respective protocol stacks.