Nearly every customer of mine has required IPv6 in their RFPs for over a year, but not a single one has turned it on even for testing.
Agreed. Similar experience over here.
Once it's a product, I think you'll see some people buying it...
You mean once Windows has it enabled by default, people will start using it. IMHO, the only chance IPv6 has of widespread US deployment is if it can happen without end users knowing they're using IPv6.
Windows customers will not notice it once they can accept DHCP'd IPV6 addresses and their provider does 6to4 mapping and what not.
Unfortunately vendor C still ships nearly all of its L3 switches and core routers with forwarding engines that don't grok IPv6 packets, even if said vendor has supported IPv6 in software for several years now.
Vendor C wants you to upgrade to new hardware-level IPV6 ASICs once demand is high enough. And then a new + verison once you need wirespeed. :) Deepak Jain AiNET