Then you will love this documentary. It even mentions Germany a couple of times.

Rootless podman, PostgreSQL, redis, nextcloud, nginx, iptables in one…

I don’t know, I had Nextcloud for a year on a local network and I didn’t have to set an address. The bigger problem was that some applications do not accept self-signed SSL, so I had to change their code, and I don’t really know how to code for Android…

You’ve got to love the open-source community! If only the whole world worked like that.

Any good alternatives?

I also had the same problem with Chrono and some other alarm applications. I think the ones that worked well had SCHEDULE_EXACT_ALARM in their permissions, but of course, that’s just a guess. This one is my favorite: https://f-droid.org/packages/com.best.deskclock/

deleted by creator

Maybe I should first ask the cellular provider for IPv6, because I misspoke; they support it but haven’t enabled it for me. If they provide it, then I won’t currently have a need for IPv4, but thank you for the advice.

Fair enough, personally I prefer to skip a few steps and then try to figure out what’s going on. It’s not the best approach, but I find it more interesting.

Gentoo is a bit more complex than arch so if installing Gentoo manually seems daunting I would recommend staying on arch.

Why? How will he progress if he don’t try harder things?

The problem was with DS-Lite tunneling, as some users mentioned, and it only works over IPv6. However, now I have another issue. My entire family has access through their ISPs, but my cellular data ISP does not support IPv6. Is there any workaround that doesn’t require me to look for a new ISP or asking for IPv4 address? 😀 By the way, thanks to everyone for the help!

If you read his title, he is actually looking for an online calculator. Supposedly, these offline ones are not up to date in mathematics.