docs(dns): record mosdns fallback hardening for AGH outage (W1N-56)
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@@ -37,6 +37,11 @@
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且在 AGH 拦截表)经 mosdns 返回真实 IP `183.60.227.49` 而非 `0.0.0.0`。已修复(备份
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`/etc/mosdns/config.yaml.bak-20260812`),修复后同一域名返回 `0.0.0.0`,taobao/google 解析
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与 clash 链均无回归。**§6 的二期示例同款缺陷已一并修正。**
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同日追加加固:`domestic_fallback`(fallback 插件:`primary: domestic_upstream`(AGH)、
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`secondary: default_upstream`(223.5.5.5/119.29.29.29)、`threshold: 500ms`)使 AGH 宕机时
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DIRECT 国内真实 IP 查询回退国内公网 DNS,不再直接报错;实测:AGH 停止时缓存未命中查询由
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fallback 应答(NXDOMAIN/真实 IP),AGH 恢复后主路径即时应答且拦截(`0.0.0.0`)恢复。
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备份:`/etc/mosdns/config.yaml.bak-fallback-20260812`。
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- AGH rewrites(实测):`hass.windy.lan`/`hass.local` → `192.168.55.11`;`dns.windy.lan` → `.36`;
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`ubnt.windy.lan` → `.46`;`gfw.windy.lan` → `.1`;`nas.windy.local` → `.32`。
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- 拦截:仅启用 **AdGuard DNS filter**(filter_1);实测 `doubleclick.net`/`googleadservices.com` → `0.0.0.0`。
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