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

Bart Baars centos at
Wed Aug 13 07:48:33 UTC 2008

It's an virtual brigde created by xen..

It's used by your xen DomainU's..



----- Oorspronkelijk bericht -----
Van: "Lunix1618" <lunix1618 at>
Aan: "CentOS mailing list" <centos at>
Verzonden: Woensdag 13 augustus 2008 06:54:59 GMT +01:00 Amsterdam / Berlijn / Bern / Rome / Stockholm / Wenen
Onderwerp: [CentOS] What is vibr0 Network interface and what is it used for


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.


virbr0    Link encap:Ethernet  HWaddr 00:00:00:00:00:00 
          inet addr:  Bcast:  Mask:
          inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link
          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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