O_BASIC_IP_SRCPORT
(*cmd)->opcode = O_BASIC_IP_SRCPORT;
keyword(MODULE_BASIC_ID, O_BASIC_IP_SRCPORT, "src-port", FILTER);
function(MODULE_BASIC_ID, O_BASIC_IP_SRCPORT,
O_BASIC_IP_SRCPORT, (filter_func)check_src_port);