How to configure gateway_prefer_min_margin in ChirpStack configuration

You can configure the gateway_prefer_min_margin under the [regions.network] configuration in your region_XXXXX.toml file. If it isn't there, it means the default value will be used (10.0). You can override this default by adding it to the [regions.network] section.

I asked GPT about this, and he said that this "gateway_prefer_min_margin" value is a boolean value.

This is false, the value is a float.