How to Resolve DNS Resolution Issues on Linux Mint After Configuring ProtonVPN

If you’re a Linux Mint user who’s run into DNS resolution issues after configuring a mobile VPN service like ProtonVPN, this blog post is for you. The problem often presents itself in the form of a newly-created network device named “Dummy” or “Dummy1”. This guide will provide a step-by-step procedure on how to disable or delete this device using the network configuration GUI menu.

Step-by-step guide:

1. Click on the “Menu” button at the bottom left of your screen.
2. In the search bar, type “Network Connections” and click on it when it appears.
3. In the “Network Connections” window, you will see a list of all the network devices. Look for a device named “Dummy” or “Dummy1”.
4. Once you locate the dummy device, click on it and then click the “Delete” button at the bottom of the window.
5. A confirmation dialog will appear. Click “Delete” to remove the device.
6. Finally, to ensure the changes take effect, restart your system.

This resolution strategy should help Linux Mint users who are experiencing DNS issues after configuring ProtonVPN or a similar VPN service. If you’re still encountering issues after following these steps, you may need to explore other troubleshooting methods or consider reaching out to Linux Mint or ProtonVPN’s support channels

This resolved the DNS resolution errors for me.