Comcast assigns a /56, /60, or /64 depending on the router configuration (/56 is for business class). That's 16 * 16 * 18,446,744,073,709,551,616 IPv6 addresses

Comcast assigns a /56, /60, or /64 depending on the router configuration (/56 is for business class). That's 16 * 16 * 18,446,744,073,709,551,616 IPv6 addresses, respectively, not 8.