An apparatus for testing equipment has a storage that includes a packet template area for storing at least a first packet template and a second packet template and a source/destination address pair area for storing at least a first set of source/destination address pairs. The source/destination address pairs are configurable to simulate non-consecutive network traffic (e.g., Internet traffic). A stream generator receives a profile identifier and responsive thereto dynamically accesses the packet template area corresponding to the profile specified by the profile identifier for at least one packet template and accesses the source/destination address pairs corresponding to the packet template for at least one address pair, and builds a test packet that includes the accessed packet template and the accessed address pair.