{
  "log": {
    "level": "debug"
  },
  "dns": {
    "servers": [
      {
        "type": "udp",
        "tag": "dns-cloudflare",
        "server": "1.2.3.4"
      },
      {
        "type": "udp",
        "tag": "dns-google",
        "server": "1.2.3.4"
      },
      {
        "type": "https",
        "tag": "dns-quad9-doh",
        "server": "1.1.1.1"
      },
      {
        "type": "fallback",
        "tag": "dns-fallback",
        "servers": [
          "dns-cloudflare",
          "dns-google",
          "dns-quad9-doh"
        ],
        // Strategies:
        //   - "sequential" (default): query servers in order; on each error move
        //     to the next one. Returns the first successful response, or the
        //     last error if all servers failed.
        //   - "parallel":             query all servers concurrently. Returns
        //     the first successful response (cancelling the rest), or the last
        //     error if all servers failed.
        "strategy": "sequential"
      }
    ],
    "disable_cache": true,
    "independent_cache": true,
    "final": "dns-fallback"
  },
  "inbounds": [
    {
      "type": "mixed",
      "tag": "mixed-in",
      "listen_port": 7897
    }
  ],
  "outbounds": [
    {
      "type": "direct",
      "tag": "direct"
    }
  ],
  "route": {
    "final": "direct",
    "default_domain_resolver": "dns-fallback",
    "auto_detect_interface": true
  }
}