疑似出现 DNS 劫持, 腾讯/阿里 doh 也被污染

devjia:

v4 被劫持到 112.121.185.*
v6 被劫持到 2a02:5740:102:45::2
而且 TTL 异常

```bash
doggo xxx.com @https://doh.pub/dns-query

NAME TYPE CLASS TTL ADDRESS NAMESERVER
xxx.com. A IN 1832s 112.121.185.214 https://doh.pub/dns-query
xxx.com. AAAA IN 1832s 2a02:5740:102:45::2 https://doh.pub/dns-query
```

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