Macbook late 2013- ethernet over thunderbolt problems
I am struggling with the following issue. Any help appreciated. Many thanks in advance.
Thunderbolt ports do not detect ethernet as expected.
Adding "Thunderbolt 1" or "Thunderbolt 2" from the Network preferences pane does not create this as an option in the available list either.
Adding "Thunderbolt Bridge" does create an option but, as expected, does not work for internet.
Restarting and/ or renewing the DCHP Lease in advanced settings, or setting IVP6 to Link-local only do not work either. I have tried all the iterations of these approaches I can think of.
I have had this Macbook from new and have never used the ethernet adapter. I now need to do so. Ports have been carefully cleaned and I have no reason to believe they have been damaged in any way.
All the above tests have been carried out with multiple cables known to be working. I do not have another mac I can connect unfortunately.
Thanks.