Originally posted here by cwk9
The funny thing is once IP version 6 replaces version 4(not sure what happened to 5) we won’t have any need for subneting because of the massive amount of ip numbers that will be available. All your networks will be seperated nice an clean at the “.”

http://www.microsoft.com/windows2000.../introipv6.asp
I was under the impression that the reason behind subnetting was to reduce overhead on backbone connectivity. Is there some additional functionality in the IPV6 implementation that increases traffic efficiency?