谁能解释为什么Java GetNetworkInterfaces在Windows 7上会返回这么多接口
作者：互联网
我一直在使用NetworkInterface.getNetworkInterfaces()
查询我机器上的网络接口.本质上,我正在尝试查找网络接口卡.这些通常称为eth0,eth1等.
它一直在Win XP甚至带有Vista过滤功能的Vista上都表现出色.
我只是注意到在Windows 7的某些配置中,我得到了大量列出的网络适配器.远不止XP和Vista.我只配置了一张卡,但似乎获得了三个不同的网络接口
>英特尔(R)82567LM-3千兆网络连接
>英特尔(R)82567LM-3千兆网络连接-QoS数据包调度程序-0000
>英特尔(R)82567LM-3千兆网络连接-WFP轻型过滤器-0000
为什么在同一件事上有3个不同的观点.
对于WAN MINIPORT,我还有六个条目.
(有关输出,请参见下文)
我可以过滤掉这些,但是经过这么多废话当然会降低性能.有谁知道为什么创建这些条目以及如何最小化它们？
作为我系统上的一个示例,我编写了这样的代码
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Arrays;
import java.util.Collections;
import java.util.Enumeration;
import static java.lang.System.out;
public class ListNetsEx {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Enumeration<NetworkInterface> nets;
try {
nets = NetworkInterface.getNetworkInterfaces();
for (NetworkInterface netint : Collections.list(nets))
displayInterfaceInformation(netint);
} catch (SocketException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private static void displayInterfaceInformation(NetworkInterface netint) throws SocketException {
// TODO Auto-generated method stub
out.printf("Display name: %s\n", netint.getDisplayName());
out.printf("Name: %s\n", netint.getName());
Enumeration<InetAddress> inetAddresses = netint.getInetAddresses();
for (InetAddress inetAddress : Collections.list(inetAddresses)) {
out.printf("InetAddress: %s\n", inetAddress);
}
out.printf("Up? %s\n", netint.isUp());
out.printf("Loopback? %s\n", netint.isLoopback());
out.printf("PointToPoint? %s\n", netint.isPointToPoint());
out.printf("Supports multicast? %s\n", netint.supportsMulticast());
out.printf("Virtual? %s\n", netint.isVirtual());
out.printf("Hardware address: %s\n",
Arrays.toString(netint.getHardwareAddress()));
out.printf("MTU: %s\n", netint.getMTU());
out.printf("\n");
}
}
在Windows 7上的输出是
Display name: Software Loopback Interface 1 Name: lo InetAddress: /0:0:0:0:0:0:0:1 InetAddress: /127.0.0.1 Up? true Loopback? true PointToPoint? false Supports multicast? true Virtual? false Hardware address: [] MTU: -1 Display name: WAN Miniport (SSTP) Name: net0 Up? false Loopback? false PointToPoint? false Supports multicast? true Virtual? false Hardware address: null MTU: -1 Display name: WAN Miniport (IKEv2) Name: net1 Up? false Loopback? false PointToPoint? false Supports multicast? true Virtual? false Hardware address: null MTU: -1 Display name: WAN Miniport (L2TP) Name: net2 Up? false Loopback? false PointToPoint? false Supports multicast? true Virtual? false Hardware address: null MTU: -1 Display name: WAN Miniport (PPTP) Name: net3 Up? false Loopback? false PointToPoint? false Supports multicast? true Virtual? false Hardware address: null MTU: -1 Display name: WAN Miniport (PPPOE) Name: ppp0 Up? false Loopback? false PointToPoint? false Supports multicast? true Virtual? false Hardware address: null MTU: -1 Display name: WAN Miniport (IPv6) Name: eth0 Up? false Loopback? false PointToPoint? false Supports multicast? true Virtual? false Hardware address: null MTU: -1 Display name: WAN Miniport (Network Monitor) Name: eth1 Up? false Loopback? false PointToPoint? false Supports multicast? true Virtual? false Hardware address: null MTU: -1 Display name: WAN Miniport (IP) Name: eth2 Up? false Loopback? false PointToPoint? false Supports multicast? true Virtual? false Hardware address: null MTU: -1 Display name: RAS Async Adapter Name: ppp1 Up? false Loopback? false PointToPoint? false Supports multicast? true Virtual? false Hardware address: null MTU: -1 Display name: Intel(R) 82567LM-3 Gigabit Network Connection Name: eth3 InetAddress: /fe80:0:0:0:b1b1:7531:17b1:bf26%11 InetAddress: /172.24.9.148 Up? true Loopback? false PointToPoint? false Supports multicast? true Virtual? false Hardware address: [120, 43, -53, 125, -80, 74] MTU: 1500 Display name: Microsoft ISATAP Adapter Name: net4 Up? false Loopback? false PointToPoint? true Supports multicast? false Virtual? false Hardware address: [0, 0, 0, 0, 0, 0, 0, -32] MTU: 1280 Display name: Teredo Tunneling Pseudo-Interface Name: net5 InetAddress: /fe80:0:0:0:e0:0:0:0%13 Up? false Loopback? false PointToPoint? true Supports multicast? false Virtual? false Hardware address: [0, 0, 0, 0, 0, 0, 0, -32] MTU: 1280 Display name: Microsoft ISATAP Adapter #2 Name: net6 Up? false Loopback? false PointToPoint? false Supports multicast? true Virtual? false Hardware address: null MTU: -1 Display name: Intel(R) 82567LM-3 Gigabit Network Connection-QoS Packet Scheduler-0000 Name: eth4 Up? false Loopback? false PointToPoint? false Supports multicast? true Virtual? false Hardware address: null MTU: -1 Display name: Intel(R) 82567LM-3 Gigabit Network Connection-WFP LightWeight Filter-0000 Name: eth5 Up? false Loopback? false PointToPoint? false Supports multicast? true Virtual? false Hardware address: null MTU: -1 Display name: WAN Miniport (Network Monitor)-QoS Packet Scheduler-0000 Name: eth6 Up? false Loopback? false PointToPoint? false Supports multicast? true Virtual? false Hardware address: null MTU: -1 Display name: WAN Miniport (IP)-QoS Packet Scheduler-0000 Name: eth7 Up? false Loopback? false PointToPoint? false Supports multicast? true Virtual? false Hardware address: null MTU: -1 Display name: WAN Miniport (IPv6)-QoS Packet Scheduler-0000 Name: eth8 Up? false Loopback? false PointToPoint? false Supports multicast? true Virtual? false Hardware address: null MTU: -1
解决方法:
Windows为内部使用定义了许多接口. Java只是返回OS告诉它的内容,Java都不添加这些内容.
您应该能够在Windows注册表中找到所有这些设备的条目.
标签：network-interface,java,windows-7 来源： https://codeday.me/bug/20191208/2091371.html