Thanks for all your input guys -- really helps.
The issue for me is packet fragmentation. I realise a full 1500 byte MTU (as is possible on Infinity with baby jumbos) might be a forlorn hope, but getting to 1492 to have some parity with most PPPoE implementations would be good.
vm_tech -- whilst I know what you can say is limited, can you pass any comment on if the fix will see an increase in MTU?
There is a chap in
this thread that said Virgin has asked if they could push new firmware to him, with a target date of the 2nd of August (today) to help with the fragmentation issue.
I am hopeful that changes to edge devices means we are more likely to see an MTU increase then if the fix was only in the core network.