By default, during connection z/Server sends its own IP address back to the client, which is then used by the client for further
communication. However, when the client connects through NAT'ed addresses, the IP address that the scheduler address space
knows about might be completely different from the IP address that the client must use. In this case, the symbolic name provided
by the VIPA parameter (and translated using a DNS server) should be specified to ensure communication.
Note: The VIPA parameter cannot be used when no fixed unique IP address is assigned to the symbolic name, for example, when VIPA
is used for load distribution.