The router address, the gateway address of the internal network
The corresponding subnet mask
MAC address of Ethernet chipsets. When change it means you have modified the MAC address of the internal network interface. You can fill it in when you need it.
Extended IP Address
Fill in the gateway IP address and the subnet mask of the virtual network segment. Simulate multiple independent network segments for the intranet. (For example, to virtualize an IP of 192.192.10.X, and its gateway is 126.96.36.199, the IP address bar should be filled with 188.8.131.52, and the subnet mask column should be filled with 255.255.255.0)