请教怎么用sequence模拟fallback？

[blog2i2j]

我用sequence模拟fallback，怎么都不成功， 请求大神指导帮助。
用途，某些内网域名先用内网DNS解析， 如果解析不成功再使用外网解析（内部域名内外网都可用，入口不同）
现在想先用10.66.60.22解析，不成功换119.29.29.29解析，内网解析没有问题。到外网的时候，结果都是在10.66这步结束了。程序不再流下去。

log:
  production: false
  level: info

plugins:

  - tag: "company_domain"
    type: domain_set
    args:
      files: "./company_domain.txt"

  - tag: "local_cn_forward"
    type: forward
    args:
        upstreams:
          - addr: "119.29.29.29"

  - tag: "company_forward"
    type: forward
    args:
        upstreams:
          - addr: "10.66.60.22"

  - tag: "company_sequence"
    type: sequence
    args:
      - exec: $company_forward
      - exec: query_summary

  - tag: "local_cn_sequence"
    type: sequence
    args:
      - exec: $local_cn_forward

  - tag: "company_sequence_1"
    type: sequence
    args:

      - exec: jump company_sequence
      - matches: "!has_resp"
        exec: jump local_cn_sequence


#main sequence
  - tag: "main_sequence"
    type: sequence
    args:
      - exec: prefer_ipv4

      #match company domain
      - matches: "qname $company_domain"
        exec: jump company_sequence_1


#dns server
  - tag: udp_server
    type: udp_server
    args:
      entry: main_sequence
      listen: 127.0.0.1:353

log如下：
2024-03-11T17:09:51.922+0800 WARN udp_server entry err {"query": {"uqid": 1, "client": "127.0.0.1", "qname": "s04.sdec.com.", "qtype": 1, "qclass": 1, "elapsed": "5.0131446s"}, "edes": [{"info_code": 0, "extra_text": "context deadline exceeded"}]}
2024-03-11T17:09:51.922+0800 WARN company_forward upstream error {"uqid": 1, "qname": "s04.sdec.com.", "qtype": 1, "qclass": 1, "upstream": "10.66.60.22", "error": "context deadline exceeded"}
2024-03-11T17:09:56.923+0800 WARN company_forward upstream error {"uqid": 2, "qname": "s04.sdec.com.", "qtype": 1, "qclass": 1, "upstream": "10.66.60.22", "error": "context deadline exceeded"}
2024-03-11T17:09:56.923+0800 WARN udp_server entry err {"query": {"uqid": 2, "client": "127.0.0.1", "qname": "s04.sdec.com.", "qtype": 1, "qclass": 1, "elapsed": "5.0002939s"}, "edes": [{"info_code": 0, "extra_text": "context deadline exceeded"}]}

[blog2i2j]

找到问题了, 是服务器不通的时候, 返回的是context deadline exceeded, 然后程序就不往下走了. 服务器能返回的时候, 程序按照逻辑会往下流动.

[cresky-github]

不写返回语句就是了。
匹配完各个条件后，再写返回语句。