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

Lunix1618 lunix1618 at gmail.com
Wed Aug 13 04:54:59 UTC 2008


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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