Okay, let's compare KDE and Ubuntu, as I understand it.

From what you said, the terminal reminds you than a Pro version exist, and that you can buy it. => This is a ads, they try to sell their product to you.

More question for the Ubuntu parts:

• How often does this happen ? Just once a year ?

KDE send a notification once a year to say they need donation, help for translation, coding, writing documentation, and more. => This is not a ads, this is a message to get help and donations, and only once a year.

If you don't see the big difference between the two things, i don't know how to make it more clear with other words.

I don't use Ubuntu, and if some parts are wrong, I wait for corrections !

Normally I don't change the names that the distribution gives to the hostname, but I've been thinking for a while about changing the names to mythological gods or Latin tree names only for server and SBC.

The only server for which I have changed the host name is now r5700server. r5700 for the processor (Ryzen 7 5700), and server because it's a server.

What I meant was that if he wants to try out Gnome, he should install only few extensions to have a vanilla experience. Then he can install the extensions he wants. I would have said the same thing for KDE or any DE.

"Try first without tweak and when it's work and you like it, try modify" something like this.

I don't really use KDE, and if I forgot some really crucial information thanks to correct me.
You can use the KDE spin version of Fedora with plasma 6, or if you love the rolling release of Arch you can try openSUSE Tumbleweed with KDE (you choose you desktop environment at installation).

And for what you going to loose if you go to GNOME :

• HDR (you can enable HDR experimental on mutter but not working for me).
• VRR (it's experimental on GNOME and work for me).
• You need extensions to customize your desktop, its not really a problem but some people don't want to many extensions (like me).
• Customization in KDE that you don't find in gnome, even in extensions.
• For Krunner you can use meta button to open gnome overview and start typing to find app.

And if you want to try GNOME try to stay the most "vanilla" possible. Some extensions I use :

• Blur my Shell
• Just Perfection
• Rounded Window Corners (need to do some search for each gnome release to find the new version)

They're working for me on PC.

We've already tried ZeroTier a long time ago, and it works well, but if you want to add another person to the game, it's a "lot" of steps before you can play. You're probably right that the best solution would be to use ZeroTier, but it's not the most practical for everyone. At least that's my opinion.
And you need to install a new application just to play with others, which is not what I want.

That's a good news.

I'm going to look at Tailscale Funnel and I don't want my friends to have to install software to play.

I don't know if this is paranoia, but I don't read good things on Cloudflare for privacy.
And after some thinking, using OVH VPS is not the best thing to do for privacy...

You got me 😂

I'm going to try the first approach of @Limonene.
I hope the amount of lag is not that high, and thank you for reminding me.

I'm going to try your first approach, which seems to be what I want.
The second one looks tempting, but the first one seems to be more secure, I think.

This can be a solution, but only for game servers, and I'm just going to use Tailscale or Netbird for apps.

From what I can see, it's possible to use this for playing Minecraft with this mod, modflared. Not the best solution, but a working one (I hope).

If I use the same server to host games and apps, how am I going to redirect URLs to the correct reverse proxy ? I think I need a little more research, but I agree that putting the reverse proxy in the same place as what I'm hosting is a better idea.

On the other hand, if I just use tailscale, how can people connect to the game servers without having to install anything ? Or I just don't understand how it works.