183.4.4 Unnumbered PPPoE ConfigurationUnnumbered PPPoE WAN type is a required feature in Japan. ISP assigns Login ID and Password to users forlogin when connecting to Internet. Service Name, AC Name is usually optional. It’s required to set the followingparameters for Unnumbered PPPoE WAN type: IP address: The unnumbered IP subnet address, assigned byISP. Network Mask : Network size of the unnumbered IP subnet. NAPT for LAN hosts: If checked, the routerenables hardware NAPT function for LAN PCs using configured LAN IP address(ex:192.168.1.X). If unchecked,NAPT is disabled and only routes packets to and from LAN PCs using unnumbered IP addresses. All otheroptions are same as those of PPPoE Setting in Section 3.4.1. Pressing the Save and Restart saves parametersand reboots the router.