@chaz_6 64:ff9b::/96 is not reserved for NAT64, but for any IPv4/IPv6 XLAT tech, e.g. SIIT (RFC7915). The same is true for 64:ff9b:1::/48 (RFC8215). So in this tweet I've mentioned enough IANA-reserved XLAT prefixes to make 281474976710657 unique "the" NAT64 representations of 8.8.8.8โฆ