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I am using android hotspot as wifi for my devices, and I want to set up DOH on my android, how can I do it?

PS: I have tried to install Intra or other APPs that can only change dns for internet access directly from Android, not from other devices that using the Android hotspot.

novice
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  • According to this post the central DNS setting (including the private DNS feature) on Android was introduced with Android 9. – Robert Jul 20 '21 at 10:12
  • Run dnscrypt-proxy. Root method is here: https://android.stackexchange.com/a/207647/218526. But it's also possible to run it with Android's built-in VPN feature, without having root. – Irfan Latif Jul 20 '21 at 10:37
  • @lrfan do you know if dnscrypt-proxy is also working for sharing hotspot wifi from carriers cellular data? It seems the hostpot pretend a wifi and I not sure if this wifi dns still use the android system dns. – novice Jul 22 '21 at 05:22
  • @Robert Have you tried in Android 9? try to enable hotspot and let other device connect this hotspot, then test your dns in the device to see if the dns is what you set in the Android 9. – novice Jul 22 '21 at 05:25
  • @novice it depends on which method you use to redirect DNS traffic towards dnscrypt-proxy. In case of root it's the robust iptables. So not even a single packet can escape from it. In case of VPN based redirection, it's not very likely because network traffic doesn't go through VPN connections. See explanation here (though the question is different). – Irfan Latif Jul 27 '21 at 16:10

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