Your post didn't reveal if you had tried to run PPPoE on your Mac...
I am currently using an Apple PowerBook G4 (the PowerPC one) and to connect to the internet i have a PPPoE connection that only works with an ethernet cable. I have tried everything to use the PPPoE with my airport but so far nothing has worked. Whenever i open network connections and tick 'use PPPoE with the airport' a message pops up saying that the airport base station has to be configured in bridge mode to work. But i have no clue how to do that. I have opened airport admin utility but there is no 'bridge mode' there.
Anyone know what the problem is?
iPhone 8: Everything we know so far
This is all the iPhone 8 reports and rumors in one place. From a 5.8-inch OLED display, reports of wireless charging and even a 3D scanner for facial recognition, it's all here.