If you know of any issues that customers might encounter during the transition to IPv6, please add a subheading to this page and explain both the problem and how to address it.
Broken users unable to access dual-stacked content
If you do deploy an IPv6 network for your content,, and point 2001::/32 at it. Your viewers/users will automatically use this relay when accessing your content, and their traffic to you will be over IPv4, all they way from their PC to your network - so, equivalent performance as IPv4. Note that I say relay here, not server.
Mozilla.org are doing this for example. Cue Matthew Zeier.
Unfortunately, not all Domain Registrars are providing IPv6 Glue yet