This guide is heavily adapted from the excellent work by @scyto.
Original gist and foundational research: https://gist.github.com/scyto/76e94832927a89d977ea989da157e9dc
The Thunderbolt hardware detection, kernel module loading, systemd configuration, and udev automation techniques are based on scyto's pioneering work on Thunderbolt networking with Proxmox. This guide adapts those proven methods for Proxmox VE 9's new native SDN OpenFabric capabilities.