FOU (Foo-Over-UDP) and GUE (Generic UDP Encapsulation) missing

Hello, it appears that the kernel modules for FOU and GUE are missing from the default kernel and cannot be enabled using modprobe either. What’s the recommended solution for this?

You can do things like

man ip-fou

and

ip fou help

I can, but to actually create a tunnel, the kernel modules need to be loaded, which they are not