mixing architectures with debootstrap

[John Heim]

I'm trying to set up a AMD64 machine to serve as an FAI server for i386 
machines. If I run fai-setup, that is going to create an nfsroot with AMD64 
binaries, is it not? How do I get it to create an nfsroot with i386 
binaries?

I tried editing make-fai-nfsroot.conf. The last line says:
FAI_DEBOOTSTRAP_OPTS="--exclude=dhcp-client,info"

I changed that to:
FAI_DEBOOTSTRAP_OPTS="--arch=i386 --exclude=dhcp-client,info"

I think that is the correct syntax for debootstrap to tell it to build a 
root dir with i386 architecture. But when I ran fai-setup and/or 
make-fai-nfsroot, it errored out.