In Network Host Node test case, the PPPoE Server Node connects with the UE via IP/PPPoE interface (provides an interface selection for the server and an IP address that the server can advertise).
With an PPPoE Server node, you can select a Phyical Interface and define a Starting IP Address.
With an Ethernet User Node, you can define:
The IP address and routing options... The IP Address (IPv4 or IPv6) 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.
Custom port selection... and error injection with the Advanced... button.
The Outbound Traffic Port to disable the normal routing function and to force packets out of the selected interface.