In the past few months I've had the following strange experience with Mullvad. It's as if DNS stops working after an hour or so, and things are only fixed when I reconnect to a different location.
The steps are roughly this. Connect to Mullvad in one location. Everything is fine. mullvad.com reports no issues with my connection. Then in ~30-60 minutes DNS will stop working. The only fix is to switch Mullvad locations and reload, which generally works. None of this happens when Mullvad isn't running.
Where do I start looking diagnose this? I have never seen anything like this.
Source: r/mullvadvpn · by /u/mataglapnano