Landslide provides the N3IWF Node in the Non 3GPP Access GW Node Test case for NWU interface traffic.
Tcl Parameter: N3iwfNodeAddr
With an Ethernet Gi Node, you can define:
The IP address and routing options... The IP Address will increment for each node.
The MAC Address to override the Hardware MAC address so the packets sent out of the interface will use the provisioned MAC address rather the Hardware MAC Address.
The Outbound Traffic Port to disable the normal routing function and to force packets out of the selected interface.