last_fd
max_fd = min(last_fd(fdt), max_fd);
n = last_fd(fdt);
CHECK(fd < 0 || last_fd == fd, "fd_check", "last fd %d == fd %d\n", last_fd, fd);
last_fd = fd;
int last_fd = -1, fd;
int err, ifindex, i, prog_fd, last_fd = -1;
last_fd = prog_fd;
if (last_fd > 0)
opta.relative_fd = last_fd;
if (last_fd > 0)
close(last_fd);