DNS resolution for local DNS-server might not work after iOS 14 update in Wireguard-tunnel

Question

DNS resolution for local DNS-server might not work after iOS 14 update in Wireguard-tunnel

After updating my Apple iOS devices to iOS 14 it seems that the DNS-resolution is not working anymore, using private/local DNS-server (unbound-service on a Raspi-server) in the Wireguard-VPN-tunnel-definition.

In any case the VPN-tunnel can be established on the iOS-device, but in case I use the Safari-browser-app on the iOS-device the web-page cannot be found, it seems that the DNS-resolution does not use my defined IPv4 and IPv6 local unbound-server addresses.

If I enhance the DNS-definition in the Wireguard-app and add an official DNS like 8.8.8.8, the Safari-browser is working normal showing the data of the web-pages. In version iOS 13 and prior I do not have any problems like this.

Does this behavior is related to the change in iOS 14 introducing the DoT or DoH in the Safari-browser?

iPad, iPadOS 14

Gepostet am 22. Sept. 2020 09:22

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Answer 1

23. Sept. 2020 22:52 als Antwort auf karo01

Hi karo01!

Thanks for posting your question in the Apple Support Communities. We have a Community for English speakers here: Official Apple Support Community

Please feel free to join and post your question there, or repost your question in German here: Offizielle Apple Support-Community

Have a nice day!

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Answer 2

04. Dez. 2020 22:59 als Antwort auf karo01

I've the same issue too. I've tried different browsers, but it doesn't work. So it's a DNS issue based on the new ios update!

Any ideas apple????

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Answer 3

04. Dez. 2020 23:15 als Antwort auf ankalinho

@ankalinho: Sry but this doesn't help! We need an solution to fix the dns problem over vpn connection.

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Answer 4

17. Dez. 2020 12:46 als Antwort auf mosensi

Yesterday I found the solution for the problem. Instead of using the real IPv4 and IPv6 addresses of the Raspberry-PI server in the Wireguard-DNS-definition, I changed this to the private-addresses of the Wireguard-server. Now the unbound-DNS-server on the Raspberry is used again.

Before I used the „real“ IP of the RasPi in the DNS-WireGuard-defintion like 192.168.170.50.

Now I am using the private Wireguard-server-address like 10.0.0.1 instead and DNS-resolution is working like in iOS version 13.

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DNS resolution for local DNS-server might not work after iOS 14 update in Wireguard-tunnel

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