Nearly by accident, I discovered that since Linux kernel 4.10, nftables is recommended over iptables. Apparently, nftables is more performant and easier to manage than iptables. I want to migrate to nftables at some point, so here are some links I collected relating to it. Hopefully that may help someone else too!

• Introductory overview
• Migration guide
• "Quick howto"
• Migration experience
• systemd configuration