With the switch to IPv6 coming many ISP's have decided to do carrier grade NAT where customer WAN's will have an address in the private network space...

http://www.networkworld.com/columnis...backspin.html?

My ISP is one that plans to do this... I still can't get an answer from them as I have a commercial account and static IP that I need the public to have access to...

But- how will this affect services like VOIP? Seems like this will kill off the ability to use dynamic DNS services for many with residential service...