@spoofykid: eventually your kernel does have these config options not compiled in but they exist as modules? In that case you could load them. For all the netfilter modules: I doubt, you would really need them
You find the available modules in /lib/modules/4.<version_of_kernel>

Strange, that these kernel configs differ so much.
I'm on pro1 firmware 4.0 and namespace "User" is missing! All others are compiled in.