Just to answer my own question.
The option "Ext Wifi" is when the TV has an internal Network Adapter and you want also a Wifi (as it tries to give 2 different MAC addresses).
The option "Ext only-Wifi" is when there is no internal Network adapter.
These observations were made before I switched off the TV, because as I said from the beginning I loose these options when the TV is turned off.
The option "Ext Wifi" is when the TV has an internal Network Adapter and you want also a Wifi (as it tries to give 2 different MAC addresses).
The option "Ext only-Wifi" is when there is no internal Network adapter.
These observations were made before I switched off the TV, because as I said from the beginning I loose these options when the TV is turned off.