MacBook lost all internet connectivity after upgrade to Tahoe 26.2

I have a mac studio and a macbook pro. Both Apple silicone.

The Mac Studio updated first to Tahoe ( 26.2 ) I didn't experience any issues with my internet connection.

My Macbook has just updated to Tahoe 26.2 and I have completely lost my internet connection, both wi-fi and using ethernet. Nothing I have tried has worked. Please don't tell me to try switching off and on again. And NO I don't use a VPN etc etc. And please don't tell me it must be my router. My Studio is connected via the same router.

Oddly when I started in safe mode and selected to reinstall Tahoe via my ethernet connection it did reinstall Tahoe, so therefore must have connected. If I tried the same using wifi it didn't work.

The re-install didn't make any difference.

I just wish someone at Apple would acknowledge the issue and sort it out