See The Philadelphia Eagles . <| sep |> I ' ll give you a c 1 for the hearts <| sep |> Flotation ? Are you saying the MaxTrax ramps aren ' t for traction ? <| sep |> Sorry for asking , but what is the reasoning to not use IPv 6 ? The number one reason ? Money . As in , it costs money to replace infrastructure that supports IPv 4 to IPv 6 . Companies will come up with all sorts of excuses for not upgrading , such as IPv 6 addresses taking up 4 x the memory of IPv 4 addresses in routing tables . This happens of both the companies that run Internet transports and the companies that make consumer networking hardware cableDSL modems , routers , etc . In a sense , it ' s a catch 22 . This is true , by the way . IPv 4 uses 32 bit addresses , IPv 6 uses 128 bit addresses . It ' s just not a good excuse .