自己编写的ralink平台用来检测DHCPclient设备是否存在，主要是通过arping的返回状态来判断，然后吧状态写入文件，goahead需要读取文件，输出到页面就OK，直接编写即可通过，私人源码不可商业用途-Their written the ralink platform used to detect DHCPclient device exists, arping return status to determine, and then writes the state file go