点击界面不会出现 [英] tap interface not coming up

问题描述

我决定添加一个点击界面并在我的代码中使用它，但我能够将其状态设置为UP。

I decided to add a tap interface and use it in my code , but I am able to get its state UP.

sudo ip -f link tuntap add tap10 mode tap
sudo ip link set tap10 up

在此之后我做ip link

After this when I do "ip link"

tap10: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN qlen 500
link/ether 26:cc:d2:b4:37:ea brd ff:ff:ff:ff:ff:ff

状态DOWN：如何将此状态设置为UP？我正在尝试向它发送数据包，但没有收到任何信息。

state DOWN: How to get this state UP ? I am trying to send packets to it and nothing is received .

推荐答案

事实证明，你需要有一个使用你的tap接口的进程才能使它处于活动状态。

It turns out that you need to have a proccess that uses your tap interface in order for it to be active.

这意味着您需要编写或使用连接到接口文件描述符的程序，然后将其状态更改为RUNNING。

This means that you need to write or use a program that connects to the interface file descriptor, then it will change its state to "RUNNING".

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