[CentOS] What is vibr0 Network interface and what is it used for

Ivan Varbanov burnbrain.mailing.lists at gmail.com
Thu Aug 14 07:05:31 UTC 2008


It comes from virtual bridge (if you use vm,xen ...).

On Wed, Aug 13, 2008 at 7:54 AM, Lunix1618 <lunix1618 at gmail.com> wrote:

> Hello,
>
> I have see that my machine have an interface that named virbr0. I have no
> idea what is it and what it using for ? I am not configured any IP address
> for it but I see it had an IP address and see it listed in firewall config.
> Can anyone give me an explanation about this or point me to a document that
> describe it ?
>
> My machine running CentOS 5.2 and do not have internet connection from the
> installation time.
>
> Thanks,
>
>
> virbr0    Link encap:Ethernet  HWaddr 00:00:00:00:00:00         inet addr:
> 192.168.122.1  Bcast:192.168.122.255  Mask:255.255.255.0
>         inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link
>         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>         RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>         TX packets:35 errors:0 dropped:0 overruns:0 carrier:0
>         collisions:0 txqueuelen:0
>         RX bytes:0 (0.0 b)  TX bytes:9143 (8.9 KiB)
>
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