Siemens SCALANCE W788-1PRO Operating Instructions Manual page 71

Adopt MAC text box
If the Set 'Adopt MAC' manually check box is selected, you will need to enter the
MAC address of the device connected to the SCALANCE W78x client over
Ethernet here.
If you do not want layer 2 communication to be handled over the SCALANCE
W78x client, but only send higher IP-based frames to one or more connected
devices, you can also leave the default setting Adopt Own Mac. In this mode, the
client registers with the MAC address of its Ethernet adapter. The IP packets are
broken down according to an internal table and forwarded to the connected
devices.
The Adopt MAC box is hidden in the "Auto find 'Adopt MAC' " and "Layer 2
Tunneling" modes.
Operating Instructions SCALANCE W78x
C79000-G8976-C184-07
Configuration Using the Wizards of Web Based Management
71