Return the network settings of this machine to the factory default status.
Select [Maintenance] - [Reset] - [Network Setting Clear] in administrator mode of Web Connection (or in [Utility] - [Administrator] of this machine), and click [Clear].
Reset the controller of this machine and restart the network interface.
Select [Maintenance] - [Reset] - [Reset] in administrator mode of Web Connection (or in [Utility] - [Administrator] of this machine), and click [Reset].