I see the Ethernet coming first answer in another comment too. Just to be clear, many protocols came before IPv4 that aren't in play. It's not because it came f

I see the Ethernet coming first answer in another comment too. Just to be clear, many protocols came before IPv4 that aren't in play. It's not because it came first, it's because they're layered. Why need an IP if you have a port number? Why need a port number if you have a url?. As also mentioned in a comment, there's IPv4 over not just Ethernet. So I agree with your comment, but a bit of pedantry goes a long way