{
  "client": {
    "cdn-ip": "2606:4700:a0::17",
    "cdn-port": 80,
    "scheme": "ws",
    "global-url": "argo1000.s01.dev",
    "tun": {
      "enable": true,
      "name": "tun0",
      "interface": "eth0",
      "log-level": "error"
    }
  }
}

目前tun仅支持linux。电信用v6跑满G口。 
cftun -c tun.json 
speedtest --interface tun0