In `/etc/pymc_repeater/config.yaml` you can add this to make the repeater only monitor but not forward on startup:
+
```
+
repeater:
+
mode: monitor
+
```
This setup also [works](https://github.com/meshcore-dev/MeshCore/pull/1137#issuecomment-3819952554) with [meshcored](https://github.com/meshcore-dev/MeshCore/pull/1137) with this `meshcored.ini` snippet: