Avanti provides NIC interface options in a drop-down list:

Dummy network:  Defines a dummy NIC.  The NIC will appear in the OpenVMS or Tru64 UNIX configuration, but will not be available to attached to an actual network.  The Dummy network option acts as a place holder.  It is useful in testing Avanti configurations prior to attaching them to a live network.

Host NIC: All available host NICs will be displayed in the drop-down list.  Selecting a host NIC ties the NIC to the virtual Alpha system.

Note:If a host NIC is added after Avanti has been installed, it will not show up on the configuration utility pull down list.  This is because the Avanti PCAP driver does not see the new device.  To make the device visible to PCAP, open a cmd window, run “NET STOP MSIPCAP” followed by “NET START MSIPCAP” to restart the Avanti PCAP driver.  Rebooting Windows will also correct the problem.