I am using haproxy to loadbalance between two webservers. I have a client generator which generates 100 threads per second and browses through the information in this webserver. When there is only one webserver behind the loadbalancer everything goes fine, but when there are two servers on the backend, on the client side i often get
Thread UserSession34: Unable to open URL http://10.76.2.15:80/PHP/index.html
(Cannot assign requested address)<br>
What is the general cause of this "cannot assign requested address" issue ? and how to solve it ?