+ { "sync", o_bool, &sync_serial,
+ "Use synchronous HDLC serial encoding", 1 },
+ { "logfd", o_int, &log_to_fd,
+ "Send log messages to this file descriptor" },
+ { "nologfd", o_int, &log_to_fd,
+ "Don't send log messages to any file descriptor",
+ OPT_NOARG | OPT_VAL(-1) },