View Full Version : [ubuntu] Wireless Internet to wired bridge troubles

April 29th, 2008, 03:00 AM
Ok have gutsy going great but having trouble getting internet to xbox with static IP. Want receive the wireless as I'm currently doing with my atheros chipset wifi card and bridge it with my ethernet. I also want other services such as windows file shares to pass through not just internet since I'm running XBMC on my xbox. I originally had this set up with windows comp but am trying to save electricity. The first problem I'm running into is that I can only get either wifi or ethernet working never both so this has made it impossible for most of the suggestions I've heard to work. I think it may have something to do with network manager but I'm not disabling it on a hunch. Thank you for whoever takes the time to answer this question.

April 29th, 2008, 05:58 AM
It _is_ because of NetworkManager. It is a bit feature limited - good critique here (though a bit outdated) http://wiki.mandriva.com/en/Projects/EasyWifi/Development/NetworkManagerCritics

You can simply remove it and revert back to the /etc/network/interfaces solution.
man interfaces
for configuration information.


May 1st, 2008, 02:13 AM
Removed it from synanaptic and the second I bring the ethernet up the wireless goes down. I don't get it.

May 1st, 2008, 02:25 AM
I'm having the exact same problem

New to linux, but am very quickly being scared away...

Just installed Ubuntu 8.04...

I'm trying to bridge my wireless network connection to my wired ethernet adapter so that I can use my computer as a means to provide internet to my xbox.

I've done in successfully in Windows, but can't get this to work in Linux...

I've tried searching EVERYWHERE, and everyone's articles/tips either don't work, are outdated, or don't make sense. Seems like theres a million ways to do it and not one works.

I can't imagine there isn't a definitive way to bridge network connections...

Furthermore... If bridging doesn't work, is Linux capable of simple network connection sharing (basically the same thing except through Connection Sharing my computer does not act as a dhcp client to the shared connection, it shares the same ip address as my laptop)

May 1st, 2008, 05:57 AM
so did you 'completely remove' the the "network-manager" package from synaptic ??

Can you post the output of right after you bring up the wired interface (and after the wireless goes down):

sudo ifconfig -a
dmesg | tail -n 100
contents of your /etc/network/interfaces file


May 1st, 2008, 12:11 PM
I haven't removed Network-Manager

Right now nothing is bridged. I couldn't get any of the suggestions/tutorials I read to work.

Care to start from scratch with me? I promise I'm a good listener! :-)

May 1st, 2008, 12:16 PM
read this - http://wiki.steenbe.nl/?p=29#more-29

May 1st, 2008, 12:34 PM
superprash, will do it right now and advise as to how it goes. Thanks for your link, it's definitely one I haven't came across yet.

May 1st, 2008, 01:21 PM
Okay superprash...

Followed your instructions, all seemed to go well. Maybe I should have elaborated a bit more on my setup...

I have 2 network adapters. One built-in wireless, and one USB Hi-Gain wireless to get a better signal from my house (office is in the garage).

Built-In wireless = wlan0
USB wireless = eth1
wired ethernet = eth0

Once this was all done, my USB wireless no longer can receive signals. I can't connect to a network through it, it keeps defaulting back to my built-in wireless.

I tried ifconfig wlan0 down, and iwconfig wlan0 txpower off and neithr of those would shut down my built-in wireless.

So I'm assuming this is why I'm not getting data out of eth0...

Any suggestions?

eth0 is the ethernet connection I want to supply my Xbox with
eth1 is the wireless network providing the internet signal.

May 1st, 2008, 03:36 PM
firstly consider using only one wifi, either usb or wifi..have you changed the command according to your setup.. if there is a command like iptables eth0..... it need not be eth0 in your case.. it could be wlan0 .. have you done it accordingly??

May 1st, 2008, 10:33 PM
I have set it up accordingly, and I would like to use only USB.

I just can't figure out how to completely disable my wifi card inside my computer....

May 1st, 2008, 10:41 PM
Check your BIOS settings. THere's probably an option in there to disable your onboard wifi.

May 1st, 2008, 10:54 PM
Right but then it's useless in Windows... Anyway to do it strictly in linux?

May 2nd, 2008, 04:01 AM
Try commenting out the line in /etc/network/interfaces that refers to your built-in card ie wlan0.

Then in a terminal try:
sudo /etc/init.d/networking restart


May 2nd, 2008, 04:49 AM
amohanty, there's nothing in there about wlan0... Here's the contents of my interface file:

auto lo
iface lo inet loopback

# The extended interfaces
auto eth0
iface eth0 inet static

# The primary network interface

iface eth1 inet dhcp
pre-up iptables-restore < /etc/iptables.rules
post-down iptables-save > /etc/iptables.rules
wireless-essid linksys

May 2nd, 2008, 06:43 AM
Something like this?:

January 1st, 2011, 02:05 AM
try this out:


this trick seems like it might work