Add NAT to Hyper-V

New-VMSwitch -SwitchName “vNAT” -SwitchType Internal

New-NetIPAddress -IPAddress 10.1.3.1  –PrefixLength 24  –InterfaceAlias "vEthernet (vNAT)"

 Get-NetAdapter

 New-NetIPAddress -IPAddress 10.1.3.1  –PrefixLength 24  –InterfaceIndex 65
New-NetNAT -Name “NATNetwork” -InternalIPInterfaceAddressPrefix 10.1.3.0/24

Set ip of guest to 10.1.3.2

https://cloudtidings.com/2017/10/31/hyper-v-networking-improvements-nat-and-what-does-it-means-to-you/