Persist on source IP and port

I think you could use persist uie and [IP::client_addr]:[TCP::client_port]. If you get a parsing error for TCP:: commands with a FastL4 VS, you can use eval:

  
 when CLIENT_ACCEPTED {  
     Set persistence based on client IP:port for 3600 seconds  
    set tcp_port_cmd "TCP::client_port"  
    persist uie "[IP::client_addr]:[eval $tcp_port_cmd]" 3600  
 }  
 

Else, this seemed to work for 9.4.7:

  
 when CLIENT_ACCEPTED { 
    log local0. "IP:port: [IP::client_addr]:[TCP::client_port]" 
    log local0. "lookup: [persist lookup uie [IP::client_addr]:[TCP::client_port]]" 
    log local0. "[persist uie [IP::client_addr]:[TCP::client_port] 3600]" 
 } 
 when SERVER_CONNECTED { 
    log local0. "lookup [persist lookup uie [IP::client_addr]:[TCP::client_port]]" 
 } 
 

Aaron