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原先的 DNS 中最靠前的是 CloudFlare 的 1.0.0.1,但这个 DNS 不支持 EDNS 协议,导致国内服务器往往会被解析到国外 IP。
此外阿里的 DNS 有两个,有些重复。
现在调整的几个 DNS 均支持 EDNS,顺序如下: