group {
        site-option-space "pxelinux";
        option pxelinux.magic f1:00:74:7e;
        if exists dhcp-parameter-request-list {
                # Always send the PXELINUX options (specified in hexadecimal)
                option dhcp-parameter-request-list = concat(option dhcp-parameter-request-list,d0,d1,d2,d3);
        }

        option root-path "/tftpboot/";
        next-server 10.0.0.1; #
        filename "hardy-installer/amd64/pxelinux.0";