I reached out to the friendly dev team on libera.chat #passt .

The issue is related to the current version of passt in the debian repository and has been reported.

sudo apt show passt

Package: passt
Version: 0.0\~git20230309.7c7625d-1

As the recommended in the github issue, upgrading to version 20241121.g238c69f-1.el9 should resolve it.