There is no tool yet available but with IPv6 numbers going up it just matter of time before it become a necessity.
Do you actually have any experience of IPv6?
Like in the old days, when scanning the entire IPv4 was seen unfeasible due to the high latency low speed internet but those numbers are going up each day on both network speeds and going down for latency by the time we have 100% IPv6 deployments it will be fast enough. Mirai 2.0 in the making thanks to net-engies pushing IPv6 hard.
Please read up on IPv6 before posting - it's been available for 19 years or so now. I'll grant you that a lot of the write ups on it are absolute bollocks but you should be able to find a reasonably good treatise somewhere. Look for names that you trust.