Enable source IP persistence based on X forwarded IP info

Hello Paul,

You can do it by different manner. One of them consist of :

1) From VS_A : Add the "X-Forwarded-For" header using either the HTTP profile or by adding an irule that insert this header.

when HTTP_REQUEST {
HTTP::header insert X-Forwarded-For [IP::remote_addr]
}

Reference : https://support.f5.com/csp/article/K4816

2) From VS_B : You will need to add the following irule, that will use "Universal persistance" on XFF header

when HTTP_REQUEST {
    set clientip ""
    if { [HTTP::header exists "X-Forwarded-For"] } {
        set clientip [HTTP::header "X-Forwarded-For"]
    } else {
        set clientip [IP::client_addr]
    }
    persist uie $clientip
} 

when HTTP_RESPONSE {
    persist add uie $clientip
}

Reference : https://devcentral.f5.com/questions/universal-persistence-with-x-forwarder-47038

Please give us a feedback.

Hope it helps

Regards