option arch code 93 = unsigned integer 16;

subnet 192.168.1.0 netmask 255.255.255.0 {
  range 192.168.1.150 192.168.1.200;       # Change this range as appropriate for your network
  next-server 192.168.1.169;               # Change this to the address of your DHCP server
  option subnet-mask 255.255.255.0;
  option routers 192.168.1.254;             # Change this to the address of your router
  option broadcast-address 192.168.1.255;
  option domain-name "box.freebox.com";     # This is optional
  option domain-name-servers 1.1.1.1;
  if exists user-class and ( option user-class = "iPXE" ) {
    filename "http://boot.netboot.xyz/menu.ipxe";
  } elsif option arch = encode-int ( 16, 16 ) {
    filename "http://boot.netboot.xyz/ipxe/netboot.xyz.efi";
    option vendor-class-identifier "HTTPClient";
  } elsif option arch = 00:07 {
    filename "netboot.xyz.efi";
  } else {
    filename "netboot.xyz.kpxe";
  }
}