1. A computer-implemented method of dynamically assigning network addresses provided by a server in a network to virtual network adapters in virtual machines, the computer-implemented method comprising: logging network addresses of the virtual machines in the network; combining one or more network addresses with information about at least one of suspending or resuming virtual machines by a control instance; and sending information about the network addresses of suspended virtual machines for its virtual network adapters with dynamically assigned network addresses to the server, wherein a reassignment of the dynamically assigned network addresses due to suspending virtual machines is prevented.