| I'm a current Comcast customer. I own my own (non-Comcast-purchased) router (an RT-AC68U) and cable modem (a Motorola Surfboard). On the modem side, nothing needed to be done for IPv6. Any firmware updates or configuration needed is done by Comcast. On the router side, there is a dedicated IPv6 configuration page. Settings are: • Connection Type: Native • All other available settings: Set to either 'Enable' or 'Stateless'. That was it. My Mac has IPv6 configuration set to configure 'Automatically', and I get an IP. If I go to plain Google and ask it "what's my ip" I get a IPv6 IP back. On my iPhone, on wifi, if I do the same "what's my ip" Google search, I get an IPv6 back. My carrier is Ting GSM; if I turn off wifi and do the same Google search, I get a different IPv6 IP back. At work, IPv6 is rolling out _very_ slowly, but I was able to get a fixed IPv6 address. That has been programmed into the configuration for my laptop's USB-Ethernet adapter, so I have IPv6 at my desk at work. Although most work services are not IPv6-enabled, DNS is. And at home, IPv6 is enabled and is in active use, both on desktop and on mobile. As for testing, I suggest https://test-ipv6.com and https://ipv6test.google.com |