{
  # filename (aka boot-file-name) and server-name (aka server-hostname)
  "Dhcp4": {
//  /// boot-file-name was defined in an unsupported scope
//  "boot-file-name": "/var/boot/boot1",
//  /// server-hostname was defined in an unsupported scope
//  "server-hostname": "foobar.biz",
    "client-classes": [
      # embedded
      {
        "name": "foo",
        "boot-file-name": "/var/boot/boot2",
        "server-hostname": "none.biz"
      }
    ]
  }
}