@Mr. Coffee, Cox supports IPv6 in a way that is transparent to the customer experience. For customers with IPv6 capable devices and software, IPv6 will need to be enabled in your home equipment, if it is not enabled by default. Your Internet experience is provided using a mix of IPv4 and IPv6 that is transparent to the end-user. -Allan, Cox Support Forums Moderator.
Cox has established an IPv6 Migration Program to make sure that all Cox networks, systems, and products have IPv6 compatibility so that when the IPv4 addresses are exhausted, we will continue our business operations without interruption. We are in the process of developing the IPv6 migration plan for all of products and services. - Lisa, Cox Support Forums Moderator