Was thinking of the fun when you start getting LLU providers involved who seem to randomly alter the MTU on their networks, and people confused over what to set on their PC.
Will have to drag myself to some BT demo centre to have a play one day I guess.
Shouldn't be an issue, MTU is part of PPPoE negotiation and networks should be happily able to carry jumbo frames right up to the BRAS where the encapsulation is stripped or will adjust MTU with client to 1492 to allow for the 8 byte PPP header.
Certainly it doesn't seem to be an issue for the Far Eastern networks though it's noteworthy that there have been a few issues here and there with Verizon FiOS before it was converted to DHCP.
It should also be noted though that all of the current connections are through BT Wholesale, so the requirement for PPPoE will be from BTW in order to separate connections between wholesale customers on their BRAS and customers' LTS. The BTO product supports DHCP and no reason why LLUOs can't use DHCP as indeed Be/O2 already do.
Stuck on the One Way Internet?