The use case is we have two applications. One web application that is passing through the F5 and is persistent based on source addr. The 2nd app is a IVR app. The IVR app posts details into the web app via an IIS proxy. The problem is the POST dosen't always end up on the node the user is persistent to with the web app. Unfortunately changes to the IVR app are not on the cards in the short term and the guys looking after the web app are copying the "POST" from the IVR across all web app servers using a perl script currently. SO... essentially they wont to investigate moving the functionality of the perl script onto the F5. Besides knowing the post was successful the client dosent need any other response.