Open PowerShell.
New-VMSwitch -name NAT-Switch -SwitchType Internal -Verbose
Check the NAT interface has been created on Hyper-V.
Get-NetAdapter
Create an IP pool for the NAT interface.
New-NetIPAddress -IPAddress 192.168.200.1 -PrefixLength 24 -InterfaceIndex 71 -Verbose
Create a subnet for the NAT interface.
Check the Network cards setting.
Bind the network adapter card to the NAT network.