Questions tagged [tap]

Question 1

As explained here in my own Q&A, reconsider the following scenario. A Linux host with a two port Linux bridge and two Linux guest VMs connected to it: the first bridge's port is connected to TAP ...

Question 2

Consider the topology where 2 QEMU VMs running Linux Ubuntu 16.04 kernel version 4.4.0-210 have both virtio-net interfaces with TAP backends connected to the same (host) Linux bridge and an SSH ...

Question 3

I've created two Linux network namespaces (ns1 and ns2), and inside each, I have: A bridge (ns1-br0, ns2-br0) A TAP device (tap0, tap1) connected to the respective bridge Each TAP device gets an IP ...

Question 4

I want to test an application that runs a complete IPv6 stack in user space. The application is supposed to process and send ethernet frames. For that I want to set up a network interface on Linux ...

Question 5

I have two debian based machines with IP adresses XXX.XXX.8.76/26 and XXX.XXX.8.77/26. Now i need to create a tap0 interface on both machines for an application that communicates with UDP messages. ...

Question 6

I have a tftp server on lan 192.168.0.0/24 I want a qemu vm reach it, with ethernet is simple a) First create br0 MAC1="52:54:$(dd if=/dev/urandom count=1 2>/dev/null | md5sum | sed 's/^$..$\...

Question 7

I have vps server, install softether on it , softether use tap device name tap_se with subnet 192.168.24.0/21 netmask 255.255.248.0 broadcast 192.168.31.259, clients connect with openvpn or l2tp to ...

Question 8

Question 9

I want to create a tap with sudo, and then attach the user space program (ssh) to it. I don't want to hard code the interface name, as multiple users will be using it, so I want the interface name to ...

Question 10

I would like to filter and capture traffic from a virtual machine. This VM must run in userspace. Capturing requires root, I know (though I hope to minimise root activity needed later). The easiest ...

Question 11

I am working on an application which can create TUN/TAP interface on host machine. I can create such interfaces using: sudo ip tuntap add tap0 mode tap Now the thing is, tap0 is hardcoded here. It ...

Question 12

I would like to use a Linux PC fitted with two network interface cards as a transparent bridge in order to capture (with wireshark or equivalent) all the traffic in both directions between my router/...

Question 13

I am getting stuck in a bit of a rut and not sure if it's a limitation with EC2 servers, my attempts to get it working or a limitation with Softether. I have an EC2 server with 2 NICs; eth0 and eth1. ...

Question 14

Overview I'm using a Linux single-board computer as an Ethernet bridge between an AWS host and a very old and very rare Unix computer. This setup, which was working until a recent sudo apt upgrade on ...

Question 15

I have the following standard configuration: A remote server connected to internet and that I can only control using SSH On this server, a QEMU instance I'm trying to find the right configuration so ...

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Questions tagged [tap]

Linux bridge forwarding from/to TAP interfaces

TCP checksum offloading on virtio-net paravirtualized interfaces

How to enable internet access for a bridge inside a Linux network namespace?

I cannot receive any packets on a tap interface

How to communciate between two tap interfaces on two machines?

A solution to bridge wlan0 or permit to use the same lan for tap/br?

Change tap device gateway

How to redirect VM DNS question to host machine localhost dnsmasq

How do I get the interface name created with `ip tuntap add mode tap`

Network routing through veth0 / bridge for userspace QEMU VM?

How to determine next available network interface name and ip range?

How to make a Machine-In-The-Middle with a dual NIC PC in Linux?

Issue with Tap interface and routing

Linux bridge won't forward IP packets from a vintage BSD machine --- but packets from other Linuxes are fine

Configure network to allow QEMU to reach internet

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