[jxj]

I like this sentence "nothing works until just about everything is working".

Actually the first ping worked in the end of 2018 to the beginning of 2019. But like you also realize, it is complicated, and actually well beyond my original imagination. So between the first ping and the release status (at the end of 2019), there was a lot of work. Finally it comes to today, and it runs "normally": stable ping, stable throughput, less crash. Huge effort is needed just to make things work as normal.