This seems to me like a potential security issue.
This seems to me like a potential security issue.
I had no idea a Thunderbolt hub could serve as a parallel Ethernet hub, nor that there were devices that could or would want to take advantage of this.
In other words, they not hubs (or switches) in the Ethernet sense, just a different physical connection to an otherwise ordinary PCIe NIC.
I imagine non-Thunderbolt USB docks are similar, presenting as a USB hub with a garden-variety USB Ethernet controller attached to one of its ports.
With that said, I imagine a "smart monitor" with integrated dock would additionally include Ethernet switch-like functionality, to enable sharing of a single physical Ethernet port (or wireless connection) between the connected host and the smart TV subsystem, just as some servers allow sharing of a single Ethernet port between the installed OS and an onboard BMC.