Mullvad VPN app for Linux, 2026.2. Networking with Virtual Machine Manager (QEMU) broken.

### Is it a bug? - [x] I know this is an issue with the app, and contacting Mullvad support is not relevant. ### I have checked if others have reported this already - [x] I have checked the issue tracker to see if others have reported similar issues. ### Current Behavior I'm on Debian 13. Mullvad VPN app was working fine with Virtual Machine Manager (VMM) just 1 week ago. (Every time I reconnected to a different mullvad VPN server, I had to remove existing network device and add a new network device into the VM. Otherwise everything worked great.) Recently I did a full system update with "sudo apt update" and "sudo apt upgrade" (including to latest Mullvad). Now, just launching VMM (and typing in its admin password), after a minute or two, the internet for both guest (and the host!) gets disconnected. Why is Mullvad suddenly incompatible with VMM? ### Expected Behavior I expected it to continue working correctly. ### Steps to Reproduce Run latest Mullvad on latest Debian 13 with latest VMM installed, with also a Debian 13 guest/VM machine. Hope this helps you reproduce the issue. ### Failure Logs ```shell ``` ### Operating system version _No response_ ### Mullvad VPN app version _No response_ ### Additional Information _No response_