DM
case DM:
printoption("RCVD", IAC, DM);
NETADD(DM);
printoption("SENT", IAC, DM);
output_data("%c%c", IAC, DM);
printoption("td: send IAC", DM));
case DM:
output_data("%c%c", IAC, DM);
printoption("td: send IAC", DM));