How to verify the network is fixed?

[maphew]

How do you know when these scripts are working, that they're doing what they're supposed to?

In the past I've seen creative uses of telnet, curl and netsh on each side the of Windows <==> WSL barrier to test for connectivity but I don't know enough to build such a test.

For the moment I'm running a dev webserver in WSL and then trying to reach it from the Windows side, but that's kind of heavyweight, and when it doesn't work (like now) I'm forever wondering if it's the dev server that's bugging out or the network.