Because I need a lot of multicast addresses (hundreds to thousands). IPv4 has a very limited pool and they're hard to get a hold of, which is why I'm looking at

Because I need a lot of multicast addresses (hundreds to thousands). IPv4 has a very limited pool and they're hard to get a hold of, which is why I'm looking at IPv6 solutions. I'd be happy to use IPv4, but I suspect the cost would be prohibitive, assuming it was feasible at all.