This testvar must be explicitly defined in the configuration file
This parameter specifies the expected MAC address of the DUT’s WAN interface. This MAC address will be used as the source MAC address in all Ethernet packets originating from the DUT’s WAN interface. If the DUT is configured to clone a specific MAC address on the WAN, this testvar should match the cloned MAC address. This parameter is used to validate the DUT’s expected source MAC address in the basic module.