I rewrote the map for yggdrasil: https://github.com/Rubikoid/yggdrasil-map-ng
I wrote before, that I have a small but proud, isolated from the main branch net on ygg.
(tldr, ygg is a peer-to-peer overlay ipv6 mesh).
I really wanted to monitor what nodes are there, who is connected to what, how packets go...
There are project of map, which is almost the third or fourth overlay mesh is living, but there is a fatal flaw.
It was written through the ass, and it was hyper difficult to maintain it for your own.