DNS protection does not work in auto proxy mode if IPv6 filtering option is enabled in Low-level settings

[rabinjk]

Please answer the following questions for yourself before submitting an issue

• [X] Filters were updated before reproducing an issue
• [X] I checked the knowledge base and found no answer
• [X] I checked to make sure that this issue has not already been filed

AdGuard version

4+ versions currently 4.4.75 nightly

Environment

• OS version: 14
• Device: Pixel 8 Pro

HTTPS filtering

• [X] yes, I do

Root access

• [X] yes, I have it

Integration with AdGuard VPN

• [ ] yes, I do

Routing mode

Automatic proxy

Ad Blocking

AdGuard Base filter, AdGuard Mobile Ads filter

Privacy

AdGuard Tracking Protection filter

Social

AdGuard Social Media filter

Annoyances

AdGuard Annoyances filter, AdGuard Cookie Notices filter, AdGuard Popups filter, AdGuard Mobile App Banners filter, AdGuard Other Annoyances filter

Security

No response

Language-specific

No response

Other

No response

Which DNS server do you use?

AdGuard DNS

DNS protocol

DNS-over-HTTPS

Custom DNS

No response

What Stealth Mode options do you have enabled?

No response

Issue Details

How to reproduce:

• DNS Protection is enabled
• AdGuard DNS DNS-over-TLS is selected
• IPv6 filtering option is enabled in Low-level settings

1. Connect via Vpn method and activate protection.
2. Сheck adguard dns on adguard.com/test.html and usability of apps (mobilism, easy to notice)
3. Switch over to automatic proxy mode
4. Check adguard dns on adguard.com/test.html and usability of mobilism again

Expected Behavior

As dns is enabled in both mode, the adguard check page should detect adguard's dns in both mode apps like mobilism. And apps should be able to use proper connection in any mode.

Actual Behavior

Butt it fails to detect dns while in automatic proxy mode leading to no effect in blocked sites. Also, the apps constantly loses usability due to lost or connection problems which is very easy to notice on forum apps like mobilism.

Screenshots

Screenshot 1

Logs have been deleted for privacy reasons.

Additional Information

No response

[maxikuzmin]

@rabinjk thanks! This issue will be fixed in the next updates, please wait for it

[maxikuzmin]

@rabinjk you closed the issue? Did the problem stop recurring? Since the problem is still recurring, I reopen the issue

[rabinjk]

I was just messing around and misclicked maybe. Also apps like unsplash, mobilism, YouTube dont work with automatic proxy mode

[maxikuzmin]

@rabinjk please open a new issue, as the problem with applications belongs to a different topic

[Versty]

@rabinjk Could you confirm that the issue is gone on your device?

[rabinjk]

No its still there with #5384. It took a reboot to produce this time

[Versty]

@rabinjk Thank you! Will be fixed in one of the future versions. As a temporary solution, we recommend disabling IPv6 filtering option in the low-level settings.