Teensy Networking Tool

There are obviously proper tools for inspecting networking gear, but they are prohibitively expensive, especially considering our primary use case. We often wish to discover the switch port to which a given device is connected without having to chase tone. Our current solution is to use Wireshark and watch for LLDP frames matching our equipment's OUI. This works great, since our gear reports hostnames, port IDs, management addresses, and even firmware version. Even better would be a pocket-sized standalone device capable of sniffing LLDP. That is exactly what we intend to build with this project.

ssilverman/QNEthernet is a networking library specifically designed for the Teensy 4.1.