Excluded sites access DNS error after switching between WANs

[lansman]

Please answer the following questions for yourself before submitting an issue.

• I checked the knowledge base and found no answer
• I checked to make sure that this issue has not already been filed

AdGuard VPN version

2.4.1 release (705)

Environment

- OS: Mac OS Sonoma 14.7 (23H124)
- Web browser Chrome
- Adguard 2.15.2.1734

Which DNS server do you use?

Default

Custom DNS

No response

Issue Details

I have two WANs, two routers and respectively two Wi-Fi networks. I work on my Macbook connecting via Wi-Fi to one of them. Adguard VPN is enabled with mode:

• VPN is active on all apps (except N)
• VPN is active on all websites (except N)

Sometimes internet is lagging, and I have to switch to another Wi-Fi network. Adguard VPN remains active and reconnects automatically. After such switches, a problem often occurs: some web sites, exluded from VPN, refuse to load, with Chrome error

This site can’t be reached
Check if there is a typo in SITE.
DNS_PROBE_FINISHED_NXDOMAIN

Sites are opened via Adguard VPN are loaded fine. If I disable Adguard VPN - problem is gone. I enable Adguard VPN - problem is back. I guess there is some DNS problem, maybe it tries to connect to the DNS server from old WAN connection. I tried to switch DNS servers in Adguard VPN settings (Adguard, Google, etc) - it didn't help. I also tried to set DNS servers on OS settings DNS servers page (Google DNS 8.8.8.8 etc) - didn't help either.

I also tried commands

dscacheutil -flushcache
sudo killall -HUP mDNSResponder

Didn't help.

Will help one of the actions:

• Switch back to previous WAN. It proves Adguard VPN remains somehow connected to the old WAN, at least with DNS settings.
• Reboot PC

Expected Behavior

Switching between WANs with Adguard VPN enabled should not lead to sites refuse to load

Actual Behavior

Switching between WANs leads to DNS_PROBE_FINISHED_NXDOMAIN

[KolbasovAnton]

@lansman Hello! Please, answer the following questions:

1. Is the problem still reproduce at latest nightly version of AGVPN app?
2. Have You tried to update to Sequoia OS (15.1.1)?
3. If none of the above helps, please, collect the logs:
   Here's what we need you to do:

• Click AdGuard VPN icon in the menu bar -> Settings -> App settings -> Advanced settings -> Logging level -> Record everything.
• Reproduce the problem, then remember the exact time it happened.
• Support tab -> Export logs and system info.
• Send the file to [email protected]:
  • include [macOS]keyword and ISSUE_NUMBER in the subject of your email
  • specify the exact time when the issue occurred.