I don't know what ISP the OP is using, but Singtel did exactly this. I got a /64 with 6rd. It was quite horrible and the main reason I switched ISP's. Now I hav

I don't know what ISP the OP is using, but Singtel did exactly this. I got a /64 with 6rd. It was quite horrible and the main reason I switched ISP's. Now I have a static /48, which is what all ISP's should be doing in my opinion.