Now got my WiFi back. My DSL issue is now fixed. There was a fault at the Telekom end on the street in a little grey box.
Now I’ve got to get OpenVPN up and running so that I can admin away from home.
I had to switch off and reboot to get wifi back. My channel now shows 13 not 11 as wished.
I had to switch turbo Geth package off as it was running my CPU at 98%… as soon as I switched it off the fans slowed and cpu at 6% 
I have package updates pending.