I can confirm that in San Francisco, I've had a DHCPv6-PD assigned allocation for far longer than a year. When Comcast claimed to throw the switch to enable IPv

I can confirm that in San Francisco, I've had a DHCPv6-PD assigned allocation for far longer than a year. When Comcast claimed to throw the switch to enable IPv6 for all of their residential customers a while back, something wonky happened to my IPv6 service (and stayed happened for several days) that required me to reboot my cable modem (which then proceeded to download a new config file and reboot several times) in order to resolve it.