I have comcast. My router is configured to enable IPv6, and my local machine appears to have an IPv6 address (though it appears to just be an IPv4 compatibilit

I have comcast. My router is configured to enable IPv6, and my local machine appears to have an IPv6 address (though it appears to just be an IPv4 compatibility address, as it contains my IPv4 address with an fffe in the middle). But this site claims I don't have an IPv6 address: http://test-ipv6.com/ http://test-ipv6.com/