libvirt network problem

Lázaro Morales lazaro at frioclima.com.cu
Mon Aug 22 13:49:32 UTC 2011


Hello,

After a fresh install of libvirt in a box with one physical interface  
(eth0), I tried to set up a bridged network in br0:

[ifcfg-eth0:]

DEVICE=eth0
HWADDR=48:5b:39:ba:f9:2a
NM_CONTROLLED=no
BRIDGE="br0"
ONBOOT=yes
NETMASK=255.255.255.0
IPADDR=192.168.0.10
GATEWAY=192.168.0.2
DNS2=192.168.0.6
TYPE=Ethernet
BOOTPROTO=none
DNS1=192.168.0.5
IPV6INIT=no
USERCTL=no

[ifcfg-br0]

DEVICE=br0
TYPE=Bridge
BOOTPROT="dhcp"
ONBOOT=yes
DELAY=0
NM_CONTROLLED=no
BOOTPROTO=dhcp
IPV6INIT=no
USERCTL=no

After that I get this:

br0       Link encap:Ethernet  HWaddr 48:5B:39:BA:F9:2A
           inet addr:192.168.0.122  Bcast:192.168.0.255  Mask:255.255.255.0
           inet6 addr: fe80::4a5b:39ff:feba:f92a/64 Scope:Link
           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
           RX packets:398 errors:0 dropped:0 overruns:0 frame:0
           TX packets:156 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:0
           RX bytes:36074 (35.2 KiB)  TX bytes:23902 (23.3 KiB)

eth0      Link encap:Ethernet  HWaddr 48:5B:39:BA:F9:2A
           inet6 addr: fe80::4a5b:39ff:feba:f92a/64 Scope:Link
           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
           RX packets:417 errors:0 dropped:0 overruns:0 frame:0
           TX packets:167 errors:0 dropped:0 overruns:0 carrier:2
           collisions:0 txqueuelen:1000
           RX bytes:43047 (42.0 KiB)  TX bytes:24860 (24.2 KiB)
           Interrupt:28

lo        Link encap:Local Loopback
           inet addr:127.0.0.1  Mask:255.0.0.0
           inet6 addr: ::1/128 Scope:Host
           UP LOOPBACK RUNNING  MTU:16436  Metric:1
           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:0
           RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

virbr0    Link encap:Ethernet  HWaddr 8E:37:DB:3B:46:3F
           inet addr:192.168.122.1  Bcast:192.168.122.255   
Mask:255.255.255.0
           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:0
           RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

And now I don't have an IP address in eth0, but I have one br0.

Is something wrong here? I see that eth0 have "Interrupt:28", what this  
mean?

Thanks in advance.

Best regards,
Lázaro.

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