Oh boy, to add insult to injury they just firewalled cjdns on the mobile connection - taking out pkteerium and my mail server, again.
And this mobile is also the same company that had the 3 day long fiber outage 🤦♂️ (they're usually good)
Anyway, I found their trick, they're blocking any UDP source port which makes too much traffic. Fix: unique source port for every cjdns connection. Yeah, I'm probably gonna make the effort and actually do that...
So 972GB per month. But hopefully they won't take a month to fix the main fiber connection.
It's basically a backup, but it's proving to be not a very good one... Gonna have to start looking at Starlink...