So I noticed that over 12 hours ago my complete ingress just stopped. Not even 1B/s occasionally, it was a flat line at 0 and the dashboard for today had 0B. (But there was the typcial repair ingress and egress was fine too, just no normal ingres)
All my 3 nodes were on 1.12.3, minimum required version is 1.9.0.
A restart of the nodes didn’t solve that.
As soon as I updated to 1.13.3 I got ingress again.
As 1.12.3 was still well above the minimum required version, this shouldn’t have happened. So why did it?