It is almost lunacy to deploy IPv6 in a customer-facing sense (note for example Google's choice to put its AAAA on a separate FQDN).
If you're going to use emotionally charged language then don't shoot yourself in the foot by using such an illogical and contrary example. Google is a very big network-oriented company and they have indeed deployed IPv6 in a customer-facing sense. To follow in their footsteps is not lunacy. They have shown that when you have a large distributed load-sharing platform, it is perfectly safe to deploy IPv6 as an alternate service entry point, in the same way that they have mail.google.com and docs.google as separate service entry points. Most people who are urging ISPs to deploy IPv6 are not telling them to do stupid things like run out and add AAAA records to all their domain names. We are telling people to trial and test IPv6 in the lab, and then roll out specific targeted IPv6 services like a 6to4 relay. Above all, don't be a lunatic, and do educate yourself and your staff before you make a move. IPv6 deployment is not a greenfield deployment so you have to weave it into the fabric of your own unique network architecture. That requires understanding of IPv6 which you can only get by trying it out yourself in your lab environment.
At this point, I'd say people are still trying to figure out how clients will migrate to IPv6.
That is a pretty dumb thing to do. Clients have already migrated to IPv6 years ago using the technology given to them by Apple, Microsoft and the free UNIXes. Job 1 is to support those clients. Job 2 is to figure out how you can deploy IPv6 at your network edge in such a way that you can grow the edge without consuming IPv4 addresses. For many small and mid-size ISPs, Job 2 does not involve anything to do with the customer's "modem" device because you don't have the kind of relationship with "modem" vendors to influence their product development. So focus on your own network edge, not on your customers' network edges.
It is at this time more a question of strategic positioning. The kind of thing your boss should be thinking about.
Bosses really appreciate well-reasoned white papers with a clear and straightforward management summary on the first page. Do you have the information and understanding of IPv6 in order to write such a white paper?
Switching your management network to IPv6 single-stack
This may actually be the last and toughest thing that ISPs do because of the variety of software and stuff in the management network. --Michael Dillon