This test program illustrates how the ACE datagram multicast feature works. To run the test simply do the following on multiple machines: # Machine 1 % ./ntalker # Machine 2 % ./ntalker # Machine 3 % ./ntalker Then, on one (or all) of the machines, type input into the keyboard. This input will be multicast to all the machines using IP multicast via the ACE_SOCK_Dgram_Mcast wrapper. When you want to shut down the sender, just type ^D.