This program emulates the network traffic of a Raspberry Pi 400 when it attempts to PXE boot.
I am emulating the network activity in order to inspect server responses from my PXE boot server, in order that I can implement my own PXE boot server.
Another way to do this would have been to use a network hub or a managed switch to capture the packets passing through them, but I don't have either of those. :D
I'm studying the PXE boot server responses so that I can implement my own (simple) PXE boot server for my SAM Coupe using the Trinity Interface, in order to be able to develop a bare metal OS for the Raspberry Pi 400 directly on the SAM Coupe, and serve it over the LAN to the booting Pi.