I think it's more likely that browsers implement the W3C geolocation API before IPv6 becomes mainstream, which will cover use-cases where accurate geolocation i

I think it's more likely that browsers implement the W3C geolocation API before IPv6 becomes mainstream, which will cover use-cases where accurate geolocation is important, but will require the permission by the user. I don't think we'll ever reach a point where IP geolocation is something you can rely on.