The activation of the IP Forwarding option is sometimes required in order to communicate with virtual machines installed on an Hyper-V server. Follow these steps to activate this option on your physical server :
1- Using Remote Desktop, connect to your server
2- Launch Powershell
3- Type the command
4- Enter "IPv4" in the context
This command will display the list of network cards , loopback cards and virtual switches configured on your server.
The first results column contains the indexes "Idx" of each of the network cards.
6- The next command will let you display the details for the network interface of your choice.
Replace <Idx> by the ID of the network card of your choice
show interface <Idx>
7- To activate the IP Forwarding option for the ID "Idx = 19" interface, execute:
set interface 19 forwarding="enabled"