The basic ethernet design does not provide addressing
The basic ethernet design does not provide addressing statement is true.
Ethernet. A wired LAN (Local Area Network) uses Ethernet cables to connect computers together directly or more commonly, through a hub, switch, or router. ... Ethernet-based networks tend to be much more reliable than wireless networks. The backbone of any network (wired or wireless) relies on an Ethernet connection.
Ethernet is the most widely installed local area network (LAN) technology. Ethernet is a link layer protocol in the TCP/IP stack, describing how networked devices can format data for transmission to other network devices on the same network segment, and how to put that data out on the network connection.
In case you had different LAN interfaces on your system then they could have meant different. ... LAN port means your Local Area Network port which invariably ends up being an Ethernet port. So for all practical purpose LAN port is the same as Ethernet port. The connector used is RJ45.