When you change network settings in a Windows virtual machine, you must reset the network stack of the virtual NIC to adopt the new settings. For a Windows guest operating system, you must disable and re-enable the network connection so it adopts a new MAC address. To perform this task with netsh, use the interface command.

Run the following commands in a DOS shell.

Procedure
1

List the network interfaces.

netsh interface show interface

2

Choose the interface that represents the external network connection and disable it with a netsh command.

netsh interface set interface name="Ethernet0" admin=DISABLED

3

Re-enable the interface with a netsh command.

netsh interface set interface name="Ethernet0" admin=ENABLED

4

Repeat the previous two commands if you have more than one NIC that needs to be reset.