On 28-sep-2005, at 20:04, Tony Li wrote:
Shim6 is not 8+8; the address changes take place in the end system.
There is not as yet any technical reason why this should be so.
No, but there's a whopper of a political reason.
If we've either misread the politics or the playing field has shifted and 8+8 is now a politically tractable solution, we should definitely explore it. It is, architecturally, a much cleaner solution.
But isn't there still the huge deployability problem caused by having to make upper layers and/or apps ignore the upper 64 bits in many places and make the lower 64 bits globally unique?