Questions about configuring and using bridging interfaces

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1answer
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Ubuntu 14.04 Server operated as a WIFI-LAN-Router drops packets between LAN and WIFI

I would like beeing able to exchange packets between WIFI and LAN. My Ubuntu 14.04 Server operated as a lan-wifi-router has two physical Ethernet Ports (p4p1 and p5p1) as well as a WIFI Module ...
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0answers
41 views

LXC container no outgoing traffic with bridged network and public IP address

I try to setup a LXC container with bridged network on ubuntu 14.04.1, but the outgoing traffic seems to be blocked. Ping another IP than the container's one is not working. Actually I tried this with ...
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1answer
7k 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 ...
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16 views

Why must write 'br0' in route table to restore host's Internet connection?(with QEMU & Tap)

That's a long story.... But at first, I have to confess that my reputation is less than 15 so I can't give you a '+1'. I need to set up several QEMU instances. One of them is a primary node, which ...
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0answers
69 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 ...
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51 views

ubuntu vm on open nebula doesn't se internet connection

I have some problem with ubuntu and open nebula. I'm trying to setup one installation of ubuntu on open nebula. Start from this assumption: my machine as an i7 with 16 GB of ram and runs ubuntu ...
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1answer
3k views

Bridging eth0 and vboxnet0 and using ISC DHCP server to provide dynamic IPs

I have Lubuntu 12.04 (64bit) with VirtualBox 4.2 installed and the setup below: eth0 adapter connected to LAN (having static IP 192.168.0.1 and it is the default gateway). ISC DHCP server listening ...
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19 views

Bridged VM guest does not get IPv6 ra prefix from host

I have a similar problem and setup as described in IPv6 does not work over bridge. My host get a IPv6 prefix but the guest VM only gets a local fe80-prefix. Using tcpdump I can see that solicit ...
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2answers
206 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 ...
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1answer
58 views

iSCSI + br0 bridge + 14.04.1 Server = does not work

On one of my servers I have: USB 4GB: 1) EFI partition 2) /boot partition iSCSI 50GB (on another fileserver): 3) / partition In /etc/network/interfaces it works flawlessly if I have: auto p3p1 ...
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2answers
7k 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 ...
0
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1answer
36 views

Multiple interface devices for KVM bridging

I have a server that I'm trying to virtualize with KVM. I'm trying to use a network bridge so that my KVM guests can have external IPs. Every time I create a bridge brctl addbr br0 brctl addif br0 ...
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25 views

Layer 2 Bridge with Tap Interface

Linux newb starting out. Figuring it all out as I go along. Im trying to layer 2 bridge a virtual tap interface and an etehrnet interface. want to achieve this. Tap0 10.0.0.3/8 =====> Br0 (Layer 2 ...
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3answers
33k 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 ...
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1answer
1k 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 ...
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1answer
39 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 ...
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0answers
11 views

Can we add ports to OVS AFTER the VM is created?

I wanted to write up a program where I can create VMs first using libvirt. Initially they would not be added to any network. Then I want them to be attached to an OVS bridge where I can specify the ...
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47 views

Link aggregation on a LXC bridge

I'm working on a server with a number of various interfaces (eth0-3) and I currently just use one for both host traffic and another for my LXC bridges traffic. Since I have a few spare ports just ...
3
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2answers
835 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 ...
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0answers
165 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 ...
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0answers
64 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 ...
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49 views

url_helper.py warning cannot route to host. Ubuntu Server

When booting a Node Via PXE i keep getting url_helper.py[warning] saying it cant route to host, My Master Node/Controller has 2 interfaces. 1 for nodes, 2 internet access. What can i do to allow the ...
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23 views

Network access impossible using bridge mode

I installed Ubuntu 12.04 LTS as a VM on VirtualBox. I activated only the first adapter to use the bridge mode. Once logged into Ubuntu, I can not ping 8.8.8.8 With the NAT mode, I access Internet ...
0
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1answer
38 views

Two network interfaces use for up and down

I've setup Ubuntu Server 14.04 as a virtual machine using vSphere. When I created the machine I set it up with 2 network cards. Is it possible to set one as a download interface and another as ...
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0answers
135 views

No internet access through bridged wireless connection in VirtualBox

I have Windows 7 installed in VirtualBox on Ubuntu 14.04. This is on a laptop so I have to networking adapters. The ethernet adapter works fine regardless of connection type. Wireless only works in ...
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0answers
23 views

Adding static MAC entry to a bridge

Is there a way to add a static MAC entry in a linux bridge against a certain port X? i.e. I know that the MAC in question resides behind port X and it will not be learnt for a while (assuming unidir ...
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0answers
10 views

netfilter's function nfq_get_outdev_name()

I'm trying to figure out what the interface of a packet is using Netfilter linux library on Ubuntu 12.04. One of my interfaces is a LAN (eth0), and the other one is connected to a router (that I've ...
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1answer
595 views

My TV cannot connect to Media Server Service on Windows7 (DNLA)

Thanks to this article Sharing Connection to other PCs (Via Wired Ethernet) I am able to connect my TV to the internet. But my TV is not able to connect to WMS Windows Media Server running on other ...
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0answers
279 views

Creating bridge from wlan to ethernet

I know there is lot of threads about bridges and how to make them and manage them but still i haven't reached a goal. So i need bridge between wlan and ethernet but mean while i need connect to ...
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1answer
52 views

Setting up VMs on different subnets

I run a server on IP X.Y.3.7 and i want to run multiple VMs on it using libvirt. I set up a bridge device: auto eth0 iface eth0 inet manual auto br0 iface br0 inet static address X.Y.3.7 ...
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20 views

Trill for Ubuntu

I have a project on testing trill but I do not have the equipement that supports it (like Cisco Nexus) so I was wondering if there is an opensource version that I could install on Ubuntu. I found ...
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538 views

How do I configure two nics and two gateway?

I have a IBM server x3200 m3 loaded with Ubuntu 10.04 LTS. My problem is my network I have a 2 different gateways: VPN static and the other one is DSL dynamic. The Internet runs normally when there ...
2
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1answer
93 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 ...
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0answers
20 views

Showing Unmanaged in network ICON even i have a working internet and local net

I have installed Ubuntu 12.04, I have assigned a Manual IP Address for my Host using Bridge, I'm using KVM so i have to use Bridge for assigning same network range for Virtual machines, Now the issue ...
0
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1answer
93 views

Bridge Ethernet and Firewire

I'm trying to connection between my eth0 and firewire0 interfaces on an Ubuntu 12.04 server. I tried using brctrl, but it apparently doesn't support firewire: samuelwn@master:~$ sudo brctl addif br0 ...
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3answers
323 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 ...
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2answers
2k 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 ...
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0answers
20 views

Using server as controlled switch

I have an Ubuntu server with 3 NICs installed. I have two classrooms. I want to control the two classrooms with IPtables separately. My problem is that I can't (bridge eth0 to eth1) and (bridge eth0 ...
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2answers
15k views

How to properly set up a network bridge using bridge-utils using wlan0 as the internet “source”?

Hey everyone this is my first post so go easy on me. I currently have a laptop with Ubuntu Studio 12.04 Beta 2 that is supplying a wireless internet connection to a windows 7 desktop computer that's ...
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0answers
97 views

Network bridge has no internet access

I have a machine with two network adapters and I want to use it to share its internet connection to an IP phone (because there's only one Cat5 cable available and while the phone has built-in switch ...
3
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2answers
4k 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 ...
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156 views

how to forward ethernet internet from ubuntu pc via wifi stick to windows 8 laptop

This is my setup: Ubuntu PC connected via Ethernet connection to a LAN that has internet connection has a WIFI stick, (the router does not have WIFI support) Windows 8 Laptop with ONLY WIFI (no ...
3
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1answer
139 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 ...
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1answer
23 views

VM Player 6.01 on Win 8.1. Ubuntu on VM, internet connect fail

How do I connect to Internet on Ubuntu 12.04 installed in a VM Player on a Win 8 machine?
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132 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 ...
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0answers
123 views

Connecting Ubuntu to internet using Windows 8 as bridge?

I have a Dell Inspiron 660s running Windows 8.1, and I just did a full boot of Ubuntu 13.10 onto a Dell Optiplex 330 that was previously running Windows XP. My goal is to connect to the internet by ...
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56 views

How to bind LXC instance to a virtual interface in Ubuntu 12.04?

I would like to bind my LXC instance to a virtual interface, eth0:1. All the other tutorials/guides I've seen involve setting the main interface to br0, and restarting the networking service, which is ...
0
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1answer
94 views

Mysterious multicast packets after bridging a bond0

I've got 2 interfaces eth0 and eth1 in a bonding (mode 4). Now I want working with kvm and let the instances communicate over a bridge br0. Now my config changes. From this...: auto eth0 iface eth0 ...
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1answer
69 views

Bridge wireless connection from OSX 10.8 to Ubuntu 12.04 LTS

I have a Mac running OSX 10.8.2 that is connected to a wireless network. My Ubuntu 12.04 LTS box has no internet capability atm (wired network down). I would like to bridge the connection on my Mac ...
0
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1answer
216 views

Virtual machine in two subnets

I'm coming from networking where a router/switch has a separate interface for management. Therefore I want to understand how this is implemented for servers/virtualized servers. I have one subnet ...