Enumerate as follows: 0 = treat all hosts as local which means JetDirect sends a maximum of 1460 bytes of data in all outbound packets. 1 = treat hosts on different subnets but in the same network as local which means for hosts in the same network, send 1460 bytes; else send 536 bytes in outbound packets. 2 = treat only hosts on the same network and same subnet as local (use 1460 bytes); otherwise treat them as remote hosts (send 536 bytes).