Why am I being asked to “Allow ‘Ecamm’ to find devices on local networks”?

Ecamm needs local network access for features such as:

The following message will show up when launching Ecamm:

Choose Allow when prompted, or these features will not work.
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If you’ve seen this prompt and have already chosen Don’t Allow, you can grant this permission by enabling the toggle next to Ecamm in the Local Network section of the Privacy & Security control panel in your Mac’s System Settings application.

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