PXE Boot FreeBSD ISO from a Linux PXE server

Solution 1:

So, /tftpboot/images/freebsd_isos/FreeBSD-9.0-RELEASE-amd64-bootonly.iso exists correct?

LABEL FreeBSD 9.0 NO KS eth0
        MENU LABEL FreeBSD9.0 AMD64
        LINUX /memdisk
        APPEND iso
        INITRD /tftpboot/images/freebsd_isos/FreeBSD-9.0-RELEASE-amd64-bootonly.iso

This should work. It's of the format of what I have used.