kvaps

set timeout=3

menuentry 'Linux diskless' --class os {

     insmod efi_gop
     insmod efi_uga

     # set server from option 66 (tftp-server-name) if not exist, use next_server
     if ! net_get_dhcp_option net_default_server ${net_default_interface} 66 string; then
         echo '        using next_server option instead.'