VirtNet is a dummy virtual network interface application. It can be used as various purpose dummy network interface for some network application which requires the network card to work, virtual loopback adapter, and virtual interface for routing some specific connections which is to be captured by packet filtering framework. VirtNet is a NDIS 3.0 miniport driver. It does absolutely nothing, but NDIS can indicate back (loopback) packets sent to this network interface. In addition VirtNet has configurable MAC address.
Windows Server 2008