menuentry "Install s51-nomad" {
    linux    /casper/ubuntu-focal-arm64/vmlinuz ip=dhcp interface=40:8d:5c:e7:b0:aa url=http://10.30.51.28:8081/ubuntu_focal_arm64/ubuntu-20.04.3-live-server-arm64.iso autoinstall ds=nocloud-net\;s=http://10.30.51.28:8081/ubuntu_focal_arm64/40:8d:5c:e7:b0:aa/ --- console=ttyAMA0,115200n8 quiet
    initrd   /casper/ubuntu-focal-arm64/initrd
}