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...    nh = nfq_nfnlh(h);    fd = nfnl_fd(nh);    while ((rv = recv(fd, buf, BUFSIZE, 0)) && (rv >= 0 || errno==EINTR || errno==EAGAIN)) {	if(rv>=0)	    nfq_handle_packet(h, buf, rv);    }    err_destroy_close:    nfq_destroy_queue(qh);err_close:    nfq_close(h);    return 1;}