Jpcap监听接收到的全是UDP包

[luoshunchang]

import java.io.IOException;

import jpcap.JpcapCaptor;
import jpcap.PacketReceiver;
import jpcap.packet.IPPacket;
import jpcap.packet.Packet;

public class JpcapCeshi
{
	public static void main(String[] args) throws IOException
	{
		jpcap.NetworkInterface[] devices = JpcapCaptor.getDeviceList();
		int index=0;
		if(devices.length >1)
			index = 1;
		JpcapCaptor captor = JpcapCaptor.openDevice(devices[index], 65535, false, 20);
		captor.loopPacket(-1, new Receiver());
	}
}

class Receiver implements PacketReceiver
{
	@Override
	public void receivePacket(Packet packet)
	{
		if(packet instanceof IPPacket)
		{

			System.out.println(packet);
			
		}
	}
}

[luoshunchang]

急求啊~~~~~~~