logging client ip address with nat

Hello

 

 

he is the traffic flow

 

 

client --> waf---> LTM --->server

 

 

waf and LTM natted the connection and we loose client ip address.

 

 

i want get client ip address from waf http request and sen through server access logs and i want log who connected vip address and member addresses.

 

 

can you give me any sample for this issue

 

 

thanks

 

 

zafer