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edns 只是告诉上游dns服务器一个基于ip地址的地理位置,当然ipv4或ipv6都行。 |
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之前看到某个 issue 中记录了一个问题,就是某些上游 DNS 服务器并不支持 edns subnet 参数,如果在查询数据包中有这个 subnet 信息,反而会导致上游 DNS 查询失败。 现在 SmartDNS 能主动探测上游 DNS 是否支持 edns subnet 么? 如果不行的话,是不是建议自己手动先尝试一下,然后结合实际情况给每个上游 DNS 单独设置(或不设置)edns subnet 参数,也就是不建议使用全局 edns subnet 参数? |
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类似这样
edns-client-subnet 192.168.1.1/24
edns-client-subnet [8::8]/56
问了一下chatgpt,查询AAAA记录时,ecs是v4的地址,也是可以生效的?那就不用再附加v6的地址了吗。smartdns是怎么实现的,查询A只附加ipv4的ecs地址,查询AAAA只附加ipv6的ecs地址吗。
这样配置了一下,没报错
server 223.5.5.5 -subnet ipv4/24 -subnet [ipv6]/60
server 223.6.6.6 -subnet ipv4/24 -subnet [ipv6]/60
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