Transit NAT to reduce latency

Hi,
To reduce as maximum as possible latency between Madrid and Hong Kong through internet, we have to perform NAT in transit, so both one peer should be “pointing” to NATed address. How can we configure ZT client in B-end to achieve that?
For instance:
A-end: IP 81.0.0.1 → NATed to 103.0.0.1
B-end: 125.0.0.1

Thanks

Hello,
sorry. I don’t think I understand the question.