Device. system, and method for automatically determining an appropriate LAN IP address range in a multi-router network environment

A device, system and method which provides for automatic selection of an alternative private address space by a gateway-router device which is given a private address on its WAN port is disclosed. The present invention provides for a device, system, and method wherein, in a given network topology, if a gateway-router device is given an IP address on its WAN port that is in a private address space then such gateway-router device will automatically select an alternative private address space to use for its DHCP server that will provision addresses to devices interconnected to its LAN port. The above inventive technique eliminates any conflict in private address provisioning.