Ping members of the pool

The iRule solution is unfortunately the only one I believe. <

You could use an iRule that returns this information when you request a certain URL not used by the application;

when LB_SELECTED {

Set variable ‘whichserver’ value to the selected Pool Member IP

set whichserver [LB::server addr]

}

when HTTP_REQUEST {

if { string tolower [HTTP::uri] equals "/whichserver" } {

HTTP::respond 200 content "Real server IP is: $whichserver"

noserver Content-Type "text/html" Connection "Close"

Stop processing the iRule for this event here

return }

}