Create 6.0 build chroot:
        fetch 6.0 i386 iso from ftp-archive
        mount ISO image
                sudo mdconfig -f ~/Downloads/6.0-RELEASE-i386-disc1.iso 
                sudo mount -t cd9660 /dev/md0 /mnt
        create build dir, e.g. ~/60Build
	svn co svn://svn.freebsd.org/base/user/sbruno/head_146698
        untar system into build dir
                cat /mnt/6.0-RELEASE/base.?? | tar --unlink -xpzf - -C ~/60Build
        mount devfs
                sudo mount -t devfs devfs ~/60build/dev
        mount source tree via nullfs into the chroot
                sudo mount -t nullfs ~/bsd/sbruno/head_146698 ~/60Build/mnt
        chroot in
                sudo chroot ~/60Build sh
	Rebuild libstand
		cd /mnt/lib/libstand && make && make install
        cd /mnt/sys/boot
        enbuildenate your loader with either TFTP, NFS or HTTP_SUPPORT defined
                BOOT_COMCONSOLE_SPEED=115200 make -DLOADER_${PROTOCOL}_SUPPORT
                                                  -DBOOT_PXELDR_ALWAYS_SERIAL
        Exit the chroot, and copy your boot loader to your tftp server
                cp ~/head_146698/sys/boot/i386/pxeldr/pxeboot ${WHEREVER}