> A transition from IPV4 to IPV6 creates a new per device tracking capability that leaks internal network structure.
I doubt it. Your load balancers will be the only addresses that will be addressable anyway. Your IPv4 load balancers will also be "leaking" IP addresses.
Clients that aren't misconfigured will use random IPv6 addresses that rotate. The usual default is once per day but that's a mere preference, you can make your computer take a new IP every minute if you want.
