For BT VDSL2, if you are using PPPoEoA, does it nowadays always have to be LLC MUX, VC-MUX no longer allowed? Is that correct?
If so, why is this different to ADSL which I think allows either PPPoEoA + LLC or VC-MUX with PPPoA on the WAN: for example with the DrayTek Vigor 120/130 where I believe you get the highest performance on the WAN link due to minimal overheads because of its use of PPPoA, while on the LAN side it changes changes to PPPoE. It's so obviously the right way to do things - why on earth doesn't everyone do it that way?
In VDSL2, is it because they actually want Ethernet framing for some reason? Even though it just seems like extra unnecessary cruft. So that they can have VLAN tags?