Description: We are investigating an issue where running a specific e-commerce iOS app inside the Xcode Simulator intermittently disrupts the Mac’s network connectivity.
When the app is launched in the Simulator, our NETransparentProxyProvider and NEFilterDataProvider extensions occasionally stop receiving traffic correctly, and shortly afterward the entire macOS DNS resolution fails. Once this happens, all apps on the Mac lose internet access until mac is restarted. Disabling extensions also fixing the issue.
This issue only appears when the app runs in the Xcode Simulator.
I would like to confirm:
- Is it possible for traffic patterns or network behavior inside the Simulator to interfere with system-level Network Extension providers on macOS?
- Are there known limitations or conflicts between the Simulator’s virtual networking interfaces and Network Extensions?
- Any recommended debugging steps or best practices to isolate this behavior?
Any guidance, known issues, or suggestions would be appreciated.