Embodiments for a method of providing load balancing over multiple network addresses across an network address translation (NAT) network including a data storage system, that defines an interface group identifying a private network for one or more clients to communicate with a host for read/write operations, configuring, in the server, pre-NAT IP (Internet Protocol) addresses for the one or more clients and adding them to the interface group, upon receiving a client hostname, returning an interface group an IP address to the client that it can use it for a data transfer operation to the data storage system, and incrementing the pre-NAT addresses after the client starts the data transfer operation such that the least used address in the interface group is always selected for the client so as to maintain load-balance across the plurality of clients.