Hello. I have built a simple sandwich structure test environment on GCP Cloud. ALB ↙ ↘ FW1 FW2 ↘ ↙ NLB ↙ ↘ SV1 SV2 However, in the PAN traffic log, XFF IP is only the IP of the upper ALB. GCP's official documentation confirmed that the XFF header contains both the client IP and the LB IP. I actually did a packet capture from the PAN, both IPs are in the XFF header. Below is a capture of only the XFF part of the captured packet. (By capturing the packet, both the real client IP and the ALB IP can be checked.) Below is the XFF IP seen by the PAN. Only the IP of the ALB that is checked in packet capture is recorded in the log. The detailed log only checks the IP of the ALB. The point is, if the XFF IP is simply an ALB IP in the PAN traffic log, then the XFF function doesn't seem to have any meaning. Is there any way to see in the log the client IP and not the ALB IP? Or am I doing something wrong? Please help me... Regards,
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