Ethernet over XLR works :3
@aurora I mean... XLR is just coax cable. Ethernet is made to run on coax cables.
This is just Ethernet over four twisted pairs.

@eragon @aurora

XLR is designed to carry analog audio over long distances where electrical interface in the audible spectrum is an issue. They solve it by sending an inverted signal alongside the normal one* so in theory if you double the number of connections and use that technique you could run a cable hundreds of metres long.

* other techniques are available.