Questions about configuring and using bridging interfaces

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14
votes
3answers
68k 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/...
14
votes
4answers
77k 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 ...
13
votes
3answers
32k 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 ...
12
votes
2answers
7k 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 ...
7
votes
2answers
12k views

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 ...
7
votes
3answers
4k 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          ...
7
votes
1answer
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 ...
7
votes
1answer
7k 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 ...
7
votes
1answer
381 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 ...
6
votes
2answers
1k 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, ...
6
votes
2answers
15k 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....
6
votes
2answers
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?
5
votes
1answer
5k 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 ...
5
votes
2answers
5k 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 ...
5
votes
4answers
2k 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/...
5
votes
2answers
12k 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 ...
4
votes
2answers
11k 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 ...
4
votes
2answers
6k 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, ...
4
votes
2answers
19k 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 ...
4
votes
1answer
1k 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 ...
4
votes
1answer
9k 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 ...
4
votes
1answer
5k 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....
4
votes
0answers
276 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 ...
3
votes
2answers
9k views

Bridging: Loosing 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 ...
3
votes
2answers
2k 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 ...
3
votes
3answers
6k 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 ...
3
votes
3answers
729 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 ...
3
votes
1answer
2k views

Bridge connection: Ubuntu keeps modifying routing table

I have set up a bridge connection from my mobile phone connected via USB to my laptop running Ubuntu 12.04 to another computer connected via ethernet cable. The bridge thus connects usb0 and eth0. I ...
3
votes
2answers
9k views

How to share my mobile broadband connection via Wifi

I am running Ubuntu 12.04 on my laptop having wifi. I have an android tablet which has wifi support. I connect my laptop to the internet through Mobile broadband (reliance netconnect zte modem). I ...
3
votes
1answer
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 ...
3
votes
1answer
2k views

Bridged network between Ubuntu Desktop 10.10 host and Ubuntu Server 10.10 Guest

I run Ubuntu 10.10 Desktop on my machine and have installed Ubuntu Server 10.10 in a Virtualbox VM. I'm running Virtualbox 4.0.2. It is not virtualbox-ose. I'd like the guest OS to have an IP address ...
3
votes
1answer
474 views

A question about the Internet/ConnectionSharing (NAT) via iptables

I'm following this tutorial to setup a NAT gateway: https://help.ubuntu.com/community/Internet/ConnectionSharing#Ubuntu_Internet_Gateway_Method_.28iptables.29 With simple eth0 as WAN and eth1 as LAN ...
3
votes
1answer
272 views

How to bridge between two computers

I have this 3 machines with this setup Computer1----Computer with Ubuntu 12.04-----Computer2 Computer1 have IP 192.168.10.1 and Computer2 have 192.168.10.10. My computer with Ubuntu have 2 ethernet ...
2
votes
1answer
210 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 ...
2
votes
1answer
9k 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 ...
2
votes
1answer
3k views

Ubuntu 16.04 LTS How to force all http/https trafic to use proxy?

I'm just switched back to Ubuntu, from Windows. I had a program in windows (Fiddler) wich captured all outgoing traffic and could edit their header to use proxy. Are there any way to force all of my ...
2
votes
1answer
27k 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?
2
votes
1answer
21 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 ...
2
votes
1answer
5k views

Bonding + Bridge : traffic passing through the wrong interface

I'm using Ubuntu server 12.04, on a server with 6 NICs, grouped in 2 bundles : eth0 and eth2 are bundled using bonding mode 1, under interface name bond0 which has IP [network].8 eth1, eth3, eth4 ...
2
votes
1answer
1k views

I want to do a bridge between ubuntu and my ps3

Hello I have been trying to put bridge mode on ubuntu basically my setup I've got a router upstairs that I usually get wireless to my laptop which is connected ethernet to my ps3, so my ps3 gets ...
2
votes
1answer
3k views

Bridge Laptop's Ethernet to Wireless

The laptop wirelessly connects to my router, while the desktop is connected to the laptop with an ethernet wire. The desktop successfully can use the internet if I set the connection to be shared on ...
2
votes
1answer
2k views

How do you make a bridge between two connections?

I've done this: Created a wireless network via the network manager. I have internet through a wire. I want create a wireless network and share my internet access that I get from a wire. @TheX ...
2
votes
0answers
3k views

network-manager, bridge and vpn

I have a shiny new system with Ubuntu 14.04 and I'm trying to get something configured which I think is reasonably simple: a bridge (br0) for KVM ability to use a VPN network-manager controlling it ...
2
votes
1answer
172 views

Network Bridge Over a Subnet

I am trying to figure out how to make a flat network by bridging over a subnet using 2 Ubuntu guests so that everything in the other subnets can talk to each other without restriction. Configuration ...
2
votes
0answers
941 views

Ubuntu 14.04: with bridge on wlan, no internet on kvm guests

I'm trying to be a "high-lander" sticking to KVM plus virt-manager to manage my VMs. But it's about a week I'm around trying to create a bridge that works for using with my VMs. I tried first tried ...
2
votes
0answers
360 views

Unable to restart my network services

I cannot restart my networking services by using the restart command. Earlier it was working fine but today I created a lot of mess by giving IPs removing and all. And now when I enter the restart ...
2
votes
0answers
63 views

How do I assign an IP address to an LXC container? [duplicate]

I'm trying to start lxc containers with their own public ip address on the network. This is what I've tried so far: On the host The host machine has an IP address of 192.168.255.254. I added a ...
2
votes
0answers
88 views

Problem linking WLAN to Ethernet

So I've been trying to use a laptop who's wifi card doesn't work properly, by using a Lenovo V570 laptop with Ubuntu 12.04 to bridge the two networks. I changed my ethernet network to "Shared to other ...
2
votes
0answers
2k views

My laptop can not access internet after setup bridge with wired NIC and wireless NIC [closed]

I setup a bridge using wired NIC and wireless NIC in order to make wireless NIC as a Wi-Fi AP to share wired internet access, after setup successfully, the Wi-Fi AP works as my expectation, but my ...
2
votes
0answers
4k views

Error: No suitable device found: no active connection or device [closed]

I am trying to SSH to a machine and initiate a VPN, created whilst in front of the machine through GNOME (Ubuntu 10.04.4 LTS); $ nmcli con NAME UUID ...