television so that a user in the household can use the host device to obtain such information furthermore if the user is outside of the household he she can use an external network server and a home gateway i e a host device to achieve the goal of controlling the television fig5 is a flowchart of an address allocation method for an intelligent information appliance in a household network according to another embodiment of the present invention this embodiment uses a microwave as an example and the method comprises step 21 when a home gateway is running properly after a microwave is connected to an adapter unit of a host device through a category 5 cable the microwave automatically sends a broadcast message including ethernet up link broadcast message that carries a mac address of the microwave and transmits the broadcast message to the adapter unit through the category 5 cable step 22 the adapter unit analyzes the broadcast message to obtain and store the mac address of the microwave and sends a device connection signal to a main processing module step 22 in one embodiment comprises step 221 after the adapter unit receives the broadcast message the adapter unit decides the destination address is the up link broadcast address and the source address is the mac address of the microwave by analyzing a frame head of the broadcast message step 222 the adapter unit stores the mac address of the microwave and step 223 the adapter unit sends a data bus signal of.