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AdguardTeam / DnsLibs

DNS filtering library that's used in AdGuard products
https://adguard.com/
Apache License 2.0
99 stars 20 forks source link

Many DNS requests in short time cause problem with internet connection #135

Closed AdamWr closed 1 year ago

AdamWr commented 2 years ago

Steps to reproduce

  1. Enable DNS Protection in AdGuard for Windows app
  2. Run this program - https://www.grc.com/dns/benchmark.htm

After a while there is a problem with internet connection and opening any website causes that DNS_PROBE_FINISHED_NO_INTERNET error is displayed.

Screenshot ![image](https://user-images.githubusercontent.com/29142494/149204637-4e5fbd28-3618-466b-87fe-94b5c60eb7da.png) ![image](https://user-images.githubusercontent.com/29142494/149204891-ce7f468f-eb64-458f-9433-5c46de840cf7.png)

I have to disable AdGuard protection to fix this problem.

If I'm not wrong, it's not a new issue and the same problem occurs with previous version of AdGuard for Windows app.

AdGuard for Windows version 7.9 nightly 4 (build 3793, CL 1.9.5)

sfionov commented 1 year ago

@AdamWr What DNS upstream did you use?

AdamWr commented 1 year ago

As I recall, in AdGuard settings I had DNS set to System default and in system settings I had Cloudflare DNS (1.1.1.1).

By the way, I cannot reproduce this issue with latest nightly build version 7.13 nightly 2 (build 4183, CL 1.11.44), so I think that it has been fixed.