Windows 10 TUN + ICS question

[To-Azamat]

Can you please explain how to enable Internet Sharing for a Windows 10 machine running Neko in TUN mode?

I tried all day today to no success. I can run program in any mode just fine, including TUN. But as soon as I enable checkbox "Allow other network users to connect through this computer’s Internet connection" in Neko TUN network adapter properties, it disconnects from server and never connects back.

I enabled ICS system service so it always on.
After switching on sharing on TUN adapter I reverted back IP-settings on local adapter so it is on the right network again.
I used switch "Allow connections" on Neko itself to on/off.

Please advice, I really have no idea where to look for it to work.

[To-Azamat]

Looks like making a gateway out of Windows machine + Nekobox is not possible, at least I did not find a way to do it.

But I quite managed to solve it with MacOS + Nekobox, working like it should.

Could be nice to have this functionality for Windows as well.