Comments on: Red Hat / CentOS Linux: Explain Use of Network Interface virbr0

By: benghi

benghi — Tue, 15 Nov 2011 06:42:57 +0000

Try ifconfig -a and if you then see (unconfigured) eth0 interface, then you have only non-configured ethernet adapter.
itconfig eth0 netmask up
route add -net default gw
will help (or starting dhcpcd if you have DHCP server in your network).

If you don’t see eth0 after ifconfig -a then your ethernet card was not recognized by the system. modprobe could help, but imho you will have to find kernel patch for your ethernet device and recompile kernel. I had to do this for my AsRock motherboard because of Atheros ethernet card. (Atheros produces most weird hardware in the world. Sony takes second place…)

By: Shashank

Shashank — Thu, 19 May 2011 06:53:00 +0000

Can anyone please tell me where is the configuration file of virtual bridge virbr0 in Linux. Or how can i change the address for Virbr0.

Thanx in advance. :-)

By: Ashish gupta

Ashish gupta — Tue, 28 Dec 2010 13:57:43 +0000

Sir,
please let me know how you install the linux becoz i m facing the problem while installing in my sony E series laptop.

By: Chankey Pathak

Chankey Pathak — Tue, 26 Oct 2010 12:19:46 +0000

@Ashish : I’m facing the same problem. It was installed correctly but networking is not enabled.

By: Ashish Gupta

Ashish Gupta — Tue, 26 Oct 2010 10:22:45 +0000

Sir,
I m not able to install the Linux On my sony viao laptop Model EB34 and i don,t want to install virtually. Please tell me the reason for the above mentioned problem

By: srikanth

srikanth — Thu, 30 Sep 2010 07:17:38 +0000

hi am srikanth in vmware can we do virtulization or not if we can do? please tell me how to do it ?

By: Chankey

Chankey — Sat, 05 Jun 2010 09:40:34 +0000

Sir, I have a problem. I have installed RHEL 5.1 in both my Laptop and on Desktop. In desktop it is working fine but in Laptop I am not able to connect to the internet.

When I use ifconfig it shows virbr0 interface and lo interface.

There is no eth0…

I tried fedora 12 and ubuntu too but same thing is happening. In desktop it is working fine. Is there is something related to my laptop’s lan card?

My system configuration is—

Sony vaio ( E series ) , 3 GB RAM, 320 HDD, INTEL CORE i3,

By: George

George — Mon, 22 Mar 2010 17:27:11 +0000

Superb!!!

By: jim

jim — Mon, 19 Oct 2009 14:48:29 +0000

I tried the above and it removed everything with the first command, but virbr0 is still there. Ran the others and it says the software is not installed. May be a reboot? Can’t do it yet as it’s a production computer.

By: Jorge Andrade

Jorge Andrade — Fri, 14 Aug 2009 19:06:41 +0000

# yum groupremove “Virtualization” has worked on a CentOS 5.3 installation.

Thanks

By: Emilliano

Emilliano — Wed, 01 Jul 2009 12:39:16 +0000

I have Fedora 10 and i want to disable virbro.
yum groupremove “Virtualization” dont work.

I solved the problem with rpm -e -nodeps libvirt.

By: Bill

Bill — Thu, 26 Mar 2009 14:50:30 +0000

This is for RHEL 5.3 32 bit.

I had run yum groupremove “Virtualization” with the same unhappy results as SSG
above. The virbr0 address was hurting my Director Server.

rpm -e –nodeps libvirt seems to work. Ifconfig shows eth0 and l0 only.

By: Frank

Frank — Mon, 02 Mar 2009 00:22:38 +0000

Jane,
You are an angel!!!

By: Jane

Jane — Wed, 19 Nov 2008 19:36:00 +0000

I got the same results as what you got when I ran, # yum groupremove “Virtualization”
My guess is that “Virtualization” was never used or actually created. This is what I did to uninstall virbr0.

# yum remove rhn-virtualization-host
# yum remove libvirt-python
# yum remove libvirt
# ifconfig

Everything should be gone except for eth0 & lo.

By: SSG

SSG — Mon, 29 Sep 2008 11:39:41 +0000

if i give the Command in Redhat Linux 5.1 means it shows

“Loading “rhnplugin” plugin
Loading “Security” plugin
Loading “installonlyn” plugin
This system is not regestered with RHN
RHN support will be disable
Setting up group process
Setting up repositories
No repositories available to set up
No group named virtualization exists
No packages to remove from groups”

it shows the above message, but if i run the command
“ifconfig”
it shows the following groups

eth0
lo
peth0
vifo.0
virbro
xenbro

how could i remove these groups except eth0 & lo?