Questions tagged [network-bridge]

Questions about configuring and using bridging interfaces

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Why do we need an IP address for a bridge?

A bridge is a layer 2 network device. On physical bridges we only have an IP address for operation and maintenance. I'm a little bit confused why we need in KVM an IP address for the bridge. I ...
fgeld's user avatar
  • 425
26 votes
3 answers
172k views

KVM Bridged Network Not Working

I just installed KVM on my Ubuntu Server according to this guide : https://help.ubuntu.com/community/KVM/Installation Then prepared a bridged network as shown in here : https://help.ubuntu.com/...
THpubs's user avatar
  • 2,795
21 votes
2 answers
147k views

VirtualBox - How to connect LAN computers to Windows XP Guest

I have software in a Windows XP Guest that acts as a server. I need to have my LAN computers connect to it. Is the best way to use a bridged connection? Is there another way? I've tried setting up a ...
Someone13's user avatar
  • 263
19 votes
5 answers
116k views

No internet connectivity in virtual-box with both Host and Virtual OS being 12.04

I have Precise 12.04 installed as the host OS. In VirtualBox,I also have installed 12.04. I am not able to connect the Virtual 12.04 to the host internet. I have tried selecting all the available ...
Nirmik's user avatar
  • 7,858
16 votes
3 answers
56k views

How do I bridge network interfaces?

I have a laptop running 11.10 with 2 network interfaces, wired and wireless. Wireless interface connects to the router with DHCP and connects to the internet. Wired interface is connected to a switch....
Rapture's user avatar
  • 548
14 votes
2 answers
26k views

How do I stop virbr0 interface being created?

Whenever I start my laptop(HP) , 'Network Connections' shows it being connected (though it is actually not) . When I go to 'edit connections' option , it shows virbr0 . I have to delete it every time ....
Rangerix's user avatar
  • 461
13 votes
1 answer
18k views

How can i configure Tor with bridge and privoxy to proxy entire system

Accessing to some repository and website for sanctioned countries always is a big challenge for developers. I try to find the best and easiest way to proxy entire system in Ubuntu with Tor, privoxy ...
Saman Salehi's user avatar
13 votes
3 answers
37k views

How do I create a non-adhoc wifi hotspot?

I wanted to use my desktop with a wired ethernet connection (eth0) to operate my "TP-LINK TL-WN722N" USB Wifi Adapter (wlan0) as a non-adhoc (infrastructure mode) access point for my Android to ...
askuhn's user avatar
  • 266
13 votes
2 answers
13k views

How to configure an OpenVPN Client Router

I am attempting to set up an OpenVPN Router so that I may connect my tablet (wireless) and Blu-Ray (wired) to a paid VPN service in another country on Ubuntu 12.10. I have successfully done this using ...
jbrookover's user avatar
11 votes
2 answers
58k views

Cant access in-built Bluetooth for Windows in Virtual Box

Do anyone know how to access in-built Bluetooth in Virtual Box. I am using Ubuntu and have installed VM(virtual box) and Windows 10 in it but somehow I am not able to access the Bluetooth. Bluetooth ...
Gaurav Budhori's user avatar
10 votes
3 answers
14k views

How to use Netplan to remove IPv6 address on a single interface

Running Ubuntu Server 19.04. Using SoftEther's Local Bridge feature. Their docs recommend disabling IP on the interface used for bridging. Here's my Netplan configuration: network: version: 2 ...
nstuyvesant's user avatar
10 votes
2 answers
22k views

Bridging: Losing WLAN network connection with 4addr on option - Why?

Question: For use with my Xen VM, I need to create a virtual network interface (vif) that is bridged to wlan0. If in /etc/network/interfaces I add auto xenbr0 iface xenbr0 inet dhcp And then ...
WitchCraft's user avatar
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9 votes
3 answers
27k views

IPv6 does not work over bridge

I installed Ubuntu 14.04 server a week ago. I use it as a virtual machine host (tasksel installed). meaning am running it with kvm + libvirt. I have set up the same bridge I had in 13.10. auto p4p1 ...
Niklas Hagman's user avatar
9 votes
2 answers
6k views

bridge vs iptables vs route?

iptables vs bridge-utils vs route I have two network cards in a Linux server and don't know how to make them communicate. After searching a lot I still don't know which method is the one that should ...
GrandSatrap's user avatar
8 votes
3 answers
10k views

How to switch between network interfaces from console?

I've installed Debian in my VirtualBox (my host OS is Ubuntu). And there I configured two network interfaces: eth0 as NAT, and eth1 as Bridge. NAT I need to have access to the internet in virtual OS, ...
Gray Bananas's user avatar
8 votes
1 answer
2k views

Bridge interfaces and KVM

I have an Ubuntu server with and a VM using KVM. The plan is that the server and the VM have a static IP address. I tried to change /etc/network/interfaces combining some of the examples available to ...
auhorn's user avatar
  • 183
7 votes
3 answers
11k views

How can I configure my firewall to work with Docker?

My computer is hosting an application on port 1234 that should never be accessible from anything but my machine. However, my Docker container (which is running Apache) should be able to access this. ...
Kaz Wolfe's user avatar
  • 34.1k
7 votes
1 answer
43k views

KVM - Create a virtual machine with 2 bridges interfaces

Can someone please let me know to create a VM using KVM with 2 bridged interfaces? I have a server that has Eth0 and Eth1 configured and connects to 2 separate networks. I'd like to create a VM within ...
Shailan's user avatar
  • 73
7 votes
3 answers
5k views

LXC Containers & Bridge Connection

I need Step by Step Configuration to make LXC Containers in Ubuntu right way to configure Lxc container's right way to config cgroup right way to config network in host & in container           ...
One Zero's user avatar
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7 votes
1 answer
8k views

Why isn't ethernet bridging working with OpenStack?

I'm trying to setup OpenStack with the nova.network.manager.FlatManager network manager which attaches (in my setting) every virtual machine to the br100 network bridge. On my host, I'm using the ...
ChrisM's user avatar
  • 79
7 votes
1 answer
452 views

I want to use Ubuntu as a firewall and wireless AP, with some external traffic passing through openVPN, and the rest just through a firewall

I would like to do some configuration through Zentyal or a similar setup, but I am also willing to use config files. I am connecting to a commercial VPN using a username and password. I want that ...
BFH's user avatar
  • 91
6 votes
1 answer
52k views

Looking for /etc/network/interfaces is missing?

So I have a newly installed ubuntu machine. I was going to enter some network setup, but this file is missing: /etc/network/interfaces. I also checked with root. There is a local loopback on the ...
darune's user avatar
  • 163
6 votes
1 answer
8k views

Directory "/proc/sys/net/bridge" missing

I upgraded my Trusty to Linux 3.19 and the directory /proc/sys/net/bridge disappeared. What's going on? My bridge exist, I can see it through brctl show, but where is the directory under /proc? If I ...
ThiagoCMC's user avatar
  • 829
6 votes
2 answers
47k views

RTNETLINK answers: file exists - configure interface

Forgive the newbie question. I am trying to setup eth1 in interfaces: however, I am getting: RTNETLINK answers: file exists here are the results of ifconfig: what am i doing wrong?
Alex Gordon's user avatar
6 votes
1 answer
8k views

Port forwarding between bridged interfaces

So I have a bunch of bridge interfaces bound with my main ethernet device (em1, blame HP). These serve various LXC containers I have running on my server and easily allows me to access them from other ...
Oli's user avatar
  • 293k
6 votes
1 answer
48k views

Ubuntu 16.04 LTS How to force all http/https traffic to use proxy? [duplicate]

I'm just switched back to Ubuntu, from Windows. I had a program in Windows (Fiddler) which captured all outgoing traffic and could edit their header to use proxy. Are there any way to force all of my ...
TLabs's user avatar
  • 61
6 votes
3 answers
3k views

Can I connect to multiple networks for double bandwidth?

If I used one wired connection to ISP_1 and another wireless connection to ISP_2, can Ubuntu benefit from both, such as running bit-torrent and getting twice the bandwidth?
Seth Hikari's user avatar
6 votes
0 answers
3k views

How to reset netplan to default in 18.04?

I tried creating a network bridge through Virtual Machine Manager for KVM. Now my Ubuntu network connection depends on my Windows KVM being booted. Since creating this bridge when Ubuntu is booted ...
Relink's user avatar
  • 61
5 votes
1 answer
10k views

sharing internet between network interfaces

I have a laptop with lubuntu 11 with two network interfaces, wireless and wired. Wireless interface connects to the router with DHCP and provides access to the internet. The wired interface has a ...
Ma99uS's user avatar
  • 185
5 votes
2 answers
21k views

How do I set up a xen bridge?

I have been reading various pages on how to set up the network for xen. Unfortunately, none of them actually have a full example config. They clearly show what the xenbr0 section should look like, but ...
Programster's user avatar
  • 5,871
5 votes
2 answers
9k views

Copy all bridge traffic to a specific interface

I have a bridge/switch set up an a machine that has multiple ports. Occasionally, I have a vm running through virtualbox, and I'll have it use a virtual adapter and then I add the adapter to the ...
Azendale's user avatar
  • 11.9k
5 votes
2 answers
29k views

Netplan bridge for KVM on Ubuntu Server 18.04 with static ips

I set up my first ubuntu server recently and I am struggeling with netplan. As I need a Windows to run one service which isnt available on linux, I try to set up KVM. The server has serveral static ...
fredo.r's user avatar
  • 151
5 votes
2 answers
28k views

How to bridge a wireless interface with another wireless interface (both on the same computer)?

Ubuntu 14.04 Basically I am trying to accomplish the following setup - wireless internet ---> wlan0 of Ubuntu computer "bridged to" wlan1 of same Ubuntu computer ---> device with wifi The reason ...
sean's user avatar
  • 51
5 votes
4 answers
3k views

Switching Juju lxc bridge

I've set up Juju running in LXC, and I'm attempting to expose it to the internal network. I'm generally following this question to point lxc to my existing bridge (eth-br0). I've edited /etc/default/...
user187595's user avatar
5 votes
1 answer
5k views

How to force a bridge to clone mac-address from first added physical port

I'm configuring KVM/QEMU on Ubuntu 18.04 using netplan. There is corporative dhcp-server that provide a lot of mandatory data in addition to ip/netmask. The issue is that a bridge on setup generates ...
Harry Urcen's user avatar
5 votes
1 answer
9k views

Configuration of a bridge with a static IP with the netplan to be used with linux container

Summary: how to configure the netplan on a host machine to create a bridge (with a static IP address) that would be used on guest virtual machine (shall be accessible from a local lan). I am using ...
milanBart's user avatar
5 votes
1 answer
2k views

LXC bridging with two NICs

I am setting up a server to host a number of LXC containers, for now just isolating web and db services. The server I am using has two NICs and I'd like to use one for host traffic and one for ...
rolands's user avatar
  • 161
5 votes
1 answer
11k views

lxc container no outgoing traffic

I am trying to setup a lxc container on a ubuntu 13.04 on a linode VPS, but I can't ping anything outside my host. my container network config looks like this: lxc.network.type = veth lxc.network....
Kristian Nygaard Jensen's user avatar
4 votes
2 answers
19k views

After starting a particular LXC container with a static IP, no default gateway route is configured

I've got one LXC container that works just fine, but a 2nd one now is mis-behaving. I've configured a static route for it, but it just won't define a gateway after sudo services networking restart or ...
David Parks's user avatar
  • 2,516
4 votes
2 answers
7k views

Ethernet-WiFi bridging with 11.04

I'd like to set up a bridge between a wireless subnet and an Ethernet subnet (actually just one client, a DVD player with absurdly poor wireless). That is, the wireless network is the "real" network, ...
Pointy's user avatar
  • 1,563
4 votes
1 answer
14k views

How to setup a bridge with network-manager?

I'm in a situation where I (think to) know how to setup a bridge and WiFi in system configuration files, but want to figure out how to use network-manager (because it's more comfortable regarding ...
Kalle Richter's user avatar
4 votes
1 answer
9k views

How to get docker0 bridge back?

After removing a bunch on obsolete entries from my Network settings I removed Bridge (docker0) per accident and now my containers cannot connect to the Internet. How do I get it back? It's supposed ...
k0pernikus's user avatar
  • 6,105
4 votes
2 answers
2k views

Libvirt network bridging issues

I want to set up a bridge so that guest VMs on my headless server use the LAN DHCP and not dnsmasq. I followed these instructions: https://jamielinux.com/docs/libvirt-networking-handbook/bridged-...
Adam Mac's user avatar
  • 181
4 votes
3 answers
1k views

Create "virtual" LAN on laptop (not VLAN)

I'm running a number of virtual machines on a Ubuntu 12.04 host. For various reasons all these VMs need fixed IP addresses. The laptop in question is used for demonstrations -- and this is where the ...
user258959's user avatar
4 votes
1 answer
2k views

How to use VPN over manually set up network bridge (with the primary interface unmanaged by NetworkManager)?

I've set up a network bridge which I'm using to connect KVM virtual machines on my desktop to my home network; I' ve don this the manual way by creating the bridge in /etc/network/interfaces (the way ...
jjakob's user avatar
  • 91
4 votes
1 answer
12k views

Ubuntu 18.04 netplan create bridge from wifi to ethernet

I am running ubuntu 18.04 and do not have much experience with networking. This ubuntu server runs on our robot and is supposed to act as a wireless to lan bridge for the rest of the wired modules on ...
Asusrog's user avatar
  • 71
4 votes
1 answer
15k views

How to stop Wireless AP Hosting using Network Manager on Ubuntu?

I use the following script to make my netbook a full-fledged wireless access point. It creates a bridge with eth0 and wlan0 and starts hostapd. #!/bin/bash service network-manager stop ifconfig ...
nixnotwin's user avatar
  • 5,023
4 votes
2 answers
991 views

Transparently bridge (not route) a wired connection to act as another wireless AP

My new, shiny, home NAS-computer, running Ubuntu 20.04, has a gigabit wired connection and an ath-9k chipset dual-band (2.5 / 5 GHz) wifi card. My current wireless AP only has a 2.5 GHz radio, and in ...
Landak's user avatar
  • 308
4 votes
4 answers
40k views

How to delete virtual interfaces

This is the part of the result of ifconfig -a. ovs-system: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 ether 72:8b:a7:2c:25:ef txqueuelen 1000 (Ethernet) RX packets 0 bytes ...
MR. ROBOT's user avatar
  • 136
4 votes
1 answer
1k views

Network bridge disconnects and reconnects to Xbox 360

I am trying to setup a network bridge to my xbox 360, but the wired connection notifies me that it is connected,5 seconds later it notifies me it disconnected, and it keeps in a cycle until I ...
Rick Rhodes's user avatar

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