Selecting Identified Public IP

Running v3.10

Have a public IP for customer base which masqs just fine. Public ip is x.y.z.57
WhatIsMyIP says I’m ip address x.y.z.57
Fine, works right, all are happy.

I then add in a customer who wants a public ip forwarded to his router.
I assign the public ip x.y.z.69 on the public interface
Setup src-nat and dst-nat in the firewall and everything works just fine.

However, now WhatIsMyIP reports my ip is his assigned IP x.y.z.69

How can I make all the non-public ip customers get a response as to the correct public ip?

Thanks,

Rick

post your rules so we dont have to guess.