We'll have to disagree on this one. IPv6 offers many improvements over IPv4, apart from increased address space. For example, the whole concept of broadcasts has gone (there are none). Protocols like arp are gone. Many people wont need to use DHCP any more. I've said it before (and it should be pointed out this is my opinion, which differs from others on this matter) that once IPv4 address space is gone there will be NO internet access for new customers. So the compelling driver would be for new people to be able to access the Internet. I don't think you are appreciating the seriousness of this. Either you will Internet access with IPv6, or no access whatsoever - no content, nothing. If people commence using dual stacks today, the migration to IPv6 will be seamless. There is no reason for end users today to notice any change. If it is left for 6 years there will be a massive upheaval. -----Original Message----- ... Sadly v6 is at best only a partial solution. If v6 really allowed a customer to do all the things that a v4 address does then there would be no shortage of money and people deploying it. The only thing that I can think of that would drive widespread v6 deployment would be compelling content or services that are simply not available on v4. If you were a content or service provider would you keep your service v6 only? I think not. Lack of v4 addresses for new comers or those who can get (think buy) them will not drive v6 deployment. More likely it will drive ISP aggregation and address trading whether legal or otherwise. What is really needed here is a migration tool that will allow seamless deployment of v6. That's seamless in the sense that a user does not notice or care which type of address they get. I suspect there's a buck in it for anyone who can work that out.