DNS64+NAT64 seems to be an elegant solution, but it's so damn expensive on AWS... as if their $0.09/GB egress wasn't already bad, there is an additional $0.045/

DNS64+NAT64 seems to be an elegant solution, but it's so damn expensive on AWS... as if their $0.09/GB egress wasn't already bad, there is an additional $0.045/GB charge for transfer through NAT64 gateway.. and you still have to pay $0.045/hour as well.