For gameplay/port forwarding purposes I usually get my IP address from WhatIsMyIP.com. About 2 months ago I got a new Comcast modem with a built in wifi router. The site still provided me the correct IP address format I'm used to like nn.nnn.nn.nn. But now when I go to WhatIsMyIP it shows me what I believe is an IPV6 address with 7 colons. Why is it doing that and how can I find my regular IP address?
Thanks for your question. IPv6 is becoming the new normal and is completely controlled by your ISP (Comcast). You can try powering off your router and powering it back on to see if a new address is assigned and if the new address is an IPv4.
There may also be an option within the router to disable IPv6. You'll need to login to the routers interface and search through the options to see if you can change that setting.