For some context, Passt is used by podman for rootless networking (by default from Podman 5.0)

It is a noticable improvement for traffic heavy containers.

https://github.com/containers/podman/blob/main/docs/tutorial...

Great piece of software. For me its killer feature is automatically passing through exposed ports in a container, so you don't have to recreate the container with different -p options. (See https://evertheylen.eu/p/probox-intro/#network)

Nice gimmick that many elements inside that explainer image directly links you to the respective source code, its referring to.