that's not even true with slaac temporary (a.k.a privacy) or secured addresses. the only thing you'd "leak" is the prefix, which is no different than a IPv4 WA

that's not even true with slaac temporary (a.k.a privacy) or secured addresses. the only thing you'd "leak" is the prefix, which is no different than a IPv4 WAN address that you'd get with a v4 NAT.