A method for automatically generating a network subnet configuration, monitors IP Address Resolution Protocol frames on the network and builds and maintains a table which includes a list of learned subnets, the ports or forwarding domain associated with each of the learned subnets and a mask associated with each learned subnet for identifying hosts belonging to the subnet. A tensioning bar is moved by an actuating device toward an entrance slot defined by an outer circumferential edge of the cylinder to engage a rear end of the printing plate. The address data can then be converted to a co-ordinate system based address by the navigation software, which can then automatically be set as the destination address used by the navigation software in calculating the route andor automatically marked on a map generated and displayed by the navigation software. The pixel electrode in the reflection region and the transmission region includes a slit. The location criterion may be fully determined by the initiating SU and specified in the call header, and may take the form of a specified radius that extends from the geographic reference location represented in the call header.