Balancing SMPP traffic based on recipient address

Hi, I see that the topic is quite old, but it's really saving my day, so thanks. Then I got one more question. I could understand from the iRule shared here, that you are balancing based on recipient address, and that's great, but what happens if the ESME opens only one TCP session towards the BigIP? I mean for my case here, I have 2 SMSCs, and 1 ESME, the iRule balance the traffic towards the 2. But the BIND had been done only once towards one of the SMSCs. What is happening is that, when the second SMSC receives the Submit, it shows, "Invalid Bind status", and that's normal because there is no bind done towards the second SMSC. So my question here is that I'm wondering if there is a way, that when the BIND comes to the LB, it clones it towards the 2 SMSCs. If not, I would need some help to make one ESME open only one BIND towards each SMSC (kind of persistance but on 2 servers not only one). Thanks alot for your help ! Best Regards