This doesn't have much to do with iRules. The most common reason you'd see one node receiving more connections than another is that you've configured a persistence profile on the virtual server. If you haven't and you're still seeing one node receive more connections, it might be because of OneConnect minimizing the number of times a new serverside connection is established for multiple client connections made on the same clientside TCP connection. SOL7208 (
Click here) has details on OneConnect.
If you have further questions, you might try searching AskF5 or contacting F5's support group.
Aaron
Nimbostratus
