Abstract: A method for state synchronization, performed by a first electronic apparatus, comprises the following steps. A first service state version identification (ID) is acquired from a local cache of the first electronic apparatus. A second service state version ID is received from a second electronic apparatus. It is determined whether the first service state version ID is older than the second service state version ID. If so, a current service state value and a third service state version ID corresponding to the current service state value are acquired by querying a service resident on a third electronic apparatus. The first, second and third electronic apparatuses are organized in an event casting tree. The third electronic apparatus is a root node of the event casting tree, and the first and second electronic apparatuses are leaf nodes of the event casting tree.

Abstract: A method for network address transition. A first network address probe message is received from a second electronic device connecting to network, and the first network address probe message comprises information regarding the second electronic device attempting to select an address in the second subnet to serve as its network address. A server response function utilized to reply to a request message from one first electronic device is disabled.

Abstract: A method for network address transition. A number of electronic apparatuses connecting to a network is detected. It is determined whether a predetermined number exceeds or equals the detected number of electronic apparatuses. If the predetermined number exceeds or equals the detected number, a response function utilized to reply with an address in a specific subnet to a request message from the first electronic device is enabled. The request message is utilized to acquire an address in the subnet.