People keep saying that there is no business case for IPv6 when the answer is staring them in the face. Growing revenue is the absolute fundamental core of any business case, and in telecom companies that is generally directly tied into growing the network.
Can you point me to BT's IPv6 deployment plans? (A serious request. If you need an NDA, I'm happy to sign one)
We have been doing IPv6 for many years now, running an IPv6 exchange and a tunnel broker and various other things. Some info is on our public website here http://www.ipv6.bt.com/index.html especially in the presentations section. And the presenters tend to include an email address on their slides so you don't need to bother going through me. But then I don't know what info you are interested in. If you still need something, email me offlist and I'll see what I can do. In addition to our old, old sub-TLA allocation and our exchange allocation, just yesterday we picked up another big IPv6 prefix from RIPE which will end up being used for commercial services in future. As you can guess, we are in process of shifting from test mode to production. When we counted up the days left until IPv4 exhaustion, we saw an ominous number so we've posted our IPv4 doomsday clock at http://penrose.uk6x.com/ I notice that the people at http://www.ipv6forum.com have adopted it for their homepage too. Even though there is not a lot of publicity surrounding it, I believe that there are very few IP transit network operators who haven't got solid IPv6 deployment plans being trialed right now. Considering Verizon's highly-connected position at the core of the IPv4 Internet, I would think that all it takes to cause a snowball effect, is for Verizon to start offering IPv6 transit and peering on the same terms as IPv4. If there is any company whose IPv6 plans we should be interested in, it is Verizon. --Michael Dillon