Persistence mode shows source address affinity although virtual server is set to use cookie persistence

mreco, i believe this is default behaviour. With cookies being a clientside thing, the BIGIP does not maintain that within it's own database, rather it checks the cookie on each client request. When you add fallback of source address this is something that the BIG-IP can track and so will add an entry into its database and use this should a cookie not get sent during the client request.

So i believe you are seeing expected behaviour with cookie persistence plus fallback of source address.

Hope this helps,

N