JPCAP ARP欺骗问题，请高手看看

Question

本帖最后由 hmengji 于 2011-12-02 11:52:31 编辑

Answer 1

 private void send(Packet packet, byte[] changeMAC) {
        EthernetPacket eth;
        if (packet.datalink instanceof EthernetPacket) {
            eth = (EthernetPacket) packet.datalink;
            for (int i = 0; i < 6; i++) {
                eth.dst_mac[i] = changeMAC[i]; // 修改包以太头，改变包的目标
                eth.src_mac[i] = device.mac_address[i]; // 源发送者为A
            }
            packet.datalink = eth;  //此处要修改以太网头，才能正常转发
            sender.sendPacket(packet);
        }
    }