Unable to view X-Forwarded-For IP in traffic monitor logs

• Under GUI: Monitor > Traffic Logs > Column "X-Forwarded-For IP" is showing blank
• X-Forwarded-For IP is received by firewall and it is verified by the receive stage packet capture
• There is also a port number associated with the XFF IP

• Palo Alto VM firewall hosted in AWS
• Client port preservation is enabled in AWS

• Retrieving the IP address does not work when the input string contains a port number in XFF field.
• It also does not work when the input string is an IPv6 address in the HTTP header (in the form [ipv6 address]).

1. Disable client port preservation in AWS

or

2. Upgrade  PAN-OS to one of the fixed versions (10.1.10, 10.2.4, 11.0.1). The issue is fixed under PAN-209069