IPv6 defines the same general functions as IPv4, but with different methods of implement-ing those functions. For example, both IPv4 and IPv6 define addressing, the concepts of subnetting larger groups of addresses into smaller groups, headers used to create an IPv4 or IPv6 …
May 08, 2011 IPv6 problems - NETGEAR Communities Re: IPv6 problems So I did a 30-30-30 reset then reflashed the stock v1.0.1.22 firmware, then did another 30-30-30 reset, while also resetting the Motorola SB6141 to defaults, still all IPv6 tests failed (even though the router reports it getting an IPv6 address and displays it. FAQs about static addresses - IPv6 | CenturyLink Internet Help
One good thing is that DOCSIS 3.0 does support IPv6, thus that helps a lot, but doesn't resolve all problems for a large deployment like they have. Alain Durand is the person to talk to if you want a status update on that, he gives presentations on the subject regularly.
The Trouble With IPv6 - Techopedia.com Aug 22, 2013 IPv6. Is It Messing Things Up for You? IPv6. Is It Messing Things Up for You? Routers, VPNs and other services struggle to connect. If you've been following articles on WhatIsMyIPAddress.com, then maybe you know a little about IPv6. If you don't, here's a quick recap: IPv6 is the new IP address format that is already beginning to replace the current format, known as IPv4.
IPv6 problems - NETGEAR Communities
Common Problems When Deploying IPv6 - System Problems After Upgrading Services to IPv6. You might encounter the following situations when preparing services for IPv6 support: Certain applications, even after they are ported to IPv6, do not turn on IPv6 support by default. You might have to configure these applications to turn on IPv6.