DNS Configure an interface

My website is an online shopping platform. When I use the DNS proxy, my payment has a problem, it can not receive the callback information. I would like to know if there are any custom configuration rules for the DNS proxy.

Cloudflare is a reverse proxy, so you need to make sure you restore visitor IP addresses so that your payment processor gets the correct IP address of the consumer. Without doing this, your payment processor will likely break since it thinks Cloudflare IP is making the purchase.

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