They'll at least have to replace and/or update CPE devices (modems, etc) to allow for ipv6 WAN addresses. I'm sure you can have IPv4 on the LAN side if necessary.
DOCSIS3 Modems come with IPv6 support. As for DOCSIS2 Modems, there is DOCSIS2 IPv6 support if the Cable Company pushes the Microcode to the Modem - See the info at »www.cablemodem.com/specification···s20.html.
