java - Pcap4j java库：无法使用相同的ping捕获多个数据包

Question

当我捕获特定数据包时，我无法使用相同的 ping 重现相同的内容。（例如，当您运行项目并执行 cmd“ping somethingthatdoesntwork.comm”结果：无法访问该页面时，您第二次执行相同的 ping 操作时没有任何反应。

public class Pcap4jLoop {

    public static void main(String[] args)
            throws PcapNativeException, IOException, NotOpenException, InterruptedException {
        String filter = null;
        if (args.length != 0) {
            filter = args[0];
        }

        PcapNetworkInterface nif = new NifSelector().selectNetworkInterface();
        if (nif == null) {
            System.exit(1);
        }
        final PcapHandle handle = nif.openLive(65536, PromiscuousMode.NONPROMISCUOUS, 10);

        PacketListener listener = new PacketListener() {
            public void gotPacket(PcapPacket packet) {
                printPacket(packet, handle);
            }

        };

        while (true) {
            handle.loop(1, listener);
            Thread.sleep(10);
        }
    }

    private static void printPacket(Packet packet, PcapHandle ph) {
        StringBuilder sb = new StringBuilder();
        if (packet != null)
            if (packet.toString().contains("Question") && packet.toString().contains("Authority")) {
                System.out.println(packet.toString().split("DNS Header")[1].split("QNAME: ")[1].split("QTYPE")[0]);
                if (packet.toString().contains("RCODE: 3")) {
                    System.out.println("Couldn't reach this page");
                }
                System.out.println("_______________________________________");
            }
    }
}