intelligent SNAT using server_selected

Yes, SERVER_SELECTED was replaced by LB_SELECTED along time ago, docs has just been playing catchup.

My only other concern is your comparison of IP addresses. It doesn't work to simply use '==' or '!=' as Tcl treats those as string comparisons. Obviously with network masks, this doesn't apply very well. So, there is a command IP::addr that is used for comparing IP addresses.

Here is your example updated to use IP::addr for the comparisons:

 
 when LB_SELECTED { 
    if {[IP::addr "[IP::client_addr]/24" equals "[IP::server_addr]/24"]} { 
       snat automap 
    } else { 
       snat none 
    } 
 } 
 

At this point, I'm not certain if IP::server_addr is available at the time of LB_SELECTED or if you need to get it from the "LB::server addr" command.