In some cases, during user-sessions that are Linux based, it's a known issue (originated at Citrix) that the wrong client IP can be displayed in the console and will be identical to the VDA address.
This is a result of a known issue from the Citrix Receiver 13.8.x version. More information can be found via this link.
The Citrix Receiver for Linux incorrectly reports to the VDA that the client address is the address of the server.
Please update the Citrix Receiver version to an up to date build as the issue was resolved.