There have been talks going on in forums about Vista doubling the internet traffic because it supports the new IPv6 standard, which will provide a broader and a larger range of IP Addresses.

I tumbled upon a CNET News article, which have interviews from Paul Mockapetris, the guy who invented DNS (Domain Name System). Its a must read article – probably one of few better written.

Dont know if Vista will hamper the network traffic or not – but sooner or later just like China – everyone will move to IPv6 standard and probably an OS which would be (rather it is) ready for IPv6 addressing space would be Vista.