c#获取远程主机MAC

//获取远程主机MAC //转载请注明来自 http://www.shang11.com 
public string getRemoteMac(string localIP, string remoteIP)
{
Int32 ldest= inet_addr(remoteIP); //目的ip

Int32 lhost= inet_addr(localIP); //本地ip

try
{
Int64 macinfo = new Int64();
Int32 len = 6;
int res = SendARP(ldest,0, ref macinfo, ref len);
return Convert.ToString(macinfo,16);
}
catch(Exception err)
{
Console.WriteLine("Error:{0}",err.Message);
}
return 0.ToString();
}