Sorting out Wifi
After considerable cogitation and use of nmap, I found the problem. Some of the wifi access points were offering dhcp service that led to no access to the internet, because they weren't giving the right gateway. I've disabled those, brought Buffalo-10 into ladysolly's room, and everything looks good now.
The Pfizer jab gave me a slightly sore arm, but I think it's calming down now.
And today, I did my VAT, the tax codes, and all the end-of-month stuff.