I'm running a native 32bit app which I have no source for that I want to sandbox. I was looking at mbox, but it says it doesn't support i686 when I was trying to eval it in a 32bit debian VM. What are the reasons for this; is it possible to add support without too much difficulty?

I know I could set up a 64bit host and chroot it into a container with a 32bit userspace; but I would want to avoid that if possible.

Thanks & Cheers