I am trying to use my 5th Gen AE with an Eircom provided F1000 Router/Modem. I have the F1000 set up in bridge mode and for about a week, everything was fine. Then, after opening a new port on the AE, everything suddenly stopped working. No matter what I do, the AirPort extreme will simply not work when I give it the correct PPPoE info. I have factory reset both devices a few times to no avail. Oddly, when the F1000 is in bridge mode, I can still connect to it and use it to access the internet from any device! Also, despite having a static IP address, when in bridge mode, the F1000 invents it's own external and internal IP address out of nowhere! They are bizarre, something like "188.8.131.526". Not a normal "10.x", or 192.x" or the other common one. My external IP should always be a static 86.xxx.xx.xxx or whatever. Also the internal IP of the F1000 is a usual 192.168.1.254 when in routing, but becomes a very obscure number when in bridge. ALSO, when the F1000 is in bridge, I cannot access it's control panel via the usual IP dialling in a browser. This coincides with it's IP changing. When I try to dial the new address it gives itself, I still get nothing. My ISP, Eircom, keep referring my to people who quite frankly haven't a notion in hell about NAT or PPPoE or VDSL2 or Bridging. I need my AirPort Extreme to work with my many AirPort Expresses and I host 2 FTP servers, a Website and Game Server. The AirPort utility is just beautiful in how I can change port configs and DHCP settings from my iPhone. I'm not using some cheap ISP piece of crap instead. So I plead to you, if anyone has had success with an AirPort Extreme and Eircom's lousy F1000 router, please tell me how you achieved that miracle. Thank you!