Aaaand we're back online again after a week of no interwebz!
Outage was due to a ridiculous reason - the power supply unit to the fiber splitter broke. Possibly due to the recent solar storms, possibly because it was marked as manufactured in 2012 from a possibly the lowest bidding Chinese manufacturer.
In any case, we're online again and I can feel like a real human again!
No more working on the ISP mobile data connection...
Image from https://www.ndtv.com/offbeat/global-internet-outage-triggers-meme-fest-2459252.