Hi,
Thanks for the response and the advice.
Seems I didn't understand what inline NAT was.
I understood inline NAT is stateless but how can you decide the device is translating the packet correctly?
When using stateful NAT, you can just hit show commands on a device console and confirm device translating correctly or not.
It maybe possible to use flow analyzer to capture the translated packets and confirm.
But to use in customer production network, they need to buy not just MX device but flow analyzer and it will be an additional cost.
Regards,
Taichi