Bridge virtual machines out WLAN interface

Posted by Thomas on Server Fault See other posts from Server Fault or by Thomas
Published on 2009-09-16T14:17:42Z Indexed on 2012/03/25 11:32 UTC
Read the original article Hit count: 346

Filed under:

linux

|

kvm-virtualization

|

wlan

It seems that my wlan card (intel 5100 AGN) firmware doesn't allow "spoofing" MAC addresses. This has the side effect of destroying the capability to bridge out my virtual machines on that interface. Apparently this is a common thing on wlan cards.

I can see the incoming traffic just fine in my virtual machines, but their DHCP queries don't get bridged out of the WLAN card. It works perfectly well when using the wired ethernet port.

Is there a workaround for this? MAC-NAT or something?

I don't want to route my virtual machines out to the Internet because I don't want my host OS to even have an IP address.

I'm using Linux and KVM for virtualization.

© Server Fault or respective owner

Related posts about linux

apt-get install and update fail

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I've got a problem with apt-get update and apt-get install ... commands . every time update or installing fails and errors are : Get:1 http://dl.google.com stable Release.gpg [198B] Ign http://dl.google.com/linux/chrome/deb/ stable/main Translation-en_US Get:2 http://dl… >>> More
kernel module compiling error

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
sh@ubuntu:/home/ccpp/helloworld$ make gcc-4.6 -O2 -DMODULE -D_KERNEL_ -W -Wall -Wstrict-prototypes -Wmissing-prototypes -isystem /lib/modules/`uname -r`/build/include -c -o hello-1.o hello-1.c hello-1.c:4:0: warning: "MODULE" redefined [enabled by default] <command-line>:0:0: note: this is… >>> More
Build-Essentials installation failing

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I am having trouble accessing the several critical header files that show to be a part of the build process. The "Ubuntu Software Center" shows "Build Essentials" as installed: Next I did the following two commands, which did not improve the problem: ~$ sudo apt-get install build-essential [sudo]… >>> More
Updating Debian kernel

as seen on Super User - Search for 'Super User'
I'm trying to update my Debian machine to 2.6.32-46 (which is the new stable). However, after doing apt-get update my apt-cache search linux-image shows me: linux-headers-2.6.32-5-486 - Header files for Linux 2.6.32-5-486 linux-headers-2.6.32-5-686-bigmem - Header files for Linux 2.6.32-5-686-bigmem linux-headers-2… >>> More
Serial connection over a single USB cable (Windows to linux, or linux to linux)

as seen on Server Fault - Search for 'Server Fault'
I'm helping out with a project for an embedded device that only has USB and no serial. This device is running Linux. These days, when we need to connect to a serial port on a device we typically use a USB to serial adapter (on something like a phone system or a load balancing device, etc). I would… >>> More

Related posts about kvm-virtualization

CentOS / Redhat Linux: Setup KVM Virtualization

as seen on Internet.com - Search for 'Internet.com'
<b>nixCraft: </b>"KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on x86 hardware containing virtualization extensions Intel VT or AMD-V. How do I install KVM under CentOS or Red Hat Enterprise Linux version 5.5?" >>> More
Linux KVM virtualization gains steam in cloud computing market

as seen on Internet.com - Search for 'Internet.com'
<b>Network Worldh:</b> "The Linux KVM hypervisor is gaining steam in the cloud computing market, with two major vendors using the virtualization software to create cloud platforms to compete against Amazon's popular EC2 service." >>> More
What is the best distro to host a KVM virtualization solution

as seen on Server Fault - Search for 'Server Fault'
I am looking for a Server oriented distro that we can expect have decent support but also offer as much as possible some of the latest features that KVM might offer. I am leaning towards Ubuntu LTS 10.04, because well it's LTS and more bleeding edge, but I find Ubuntu not serious enough in terms… >>> More
virt-manager can't open the display

as seen on Server Fault - Search for 'Server Fault'
My virt-manager was working just fine and all of a sudden stopped working, throwing in error: RuntimeError: could not open display root@rakcal ~]# echo $DISPLAY localhost:10.0 [root@rakcal ~]# virt-manager Traceback (most recent call last): File "/usr/share/virt-manager/virt-manager.py", line… >>> More
Yum update not working on CentOS 6.2 minimal install

as seen on Server Fault - Search for 'Server Fault'
Note: This is my first question on the stack exchange network so please give mercy and provide guidance where needed. I have installed a CentOS 6.2 KVM guest and I am having problem getting yum to work. This is my first time working with CentOS so I feel that it's a setting somewhere that I am missing… >>> More