We have several applications that are front-ended by a Citrix NetScaler LB v12.1. It is not passing the user’s IP addresses back to the application. All of the client IP addresses are the VIP of the NetScaler. I have moved the “X-Forwarded-For (default)” to the top of the IP Determination list and enabled that header on the business service in the NetScaler. We are still not getting locations for those users. Has anyone else had this issue?
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It's very common for load balancers to not be configured to pass x-forwarded-for or other "true client IP" headers. I would check with the team that administers the load balancers to see if they can turn on the capability.