[CentOS-virt] Network failure on KVM guest

Nux! nux at li.nux.ro
Wed Oct 3 07:19:19 EDT 2012

On 03.10.2012 12:16, lhecking at users.sourceforge.net wrote:
> I set up a KVM host a few months back with eight virtual machines 
> running
>  on it. Now, at least since yesterday, one of the guests (which apart 
> from
>  the MAC address is otherwise identical to six other guests) has lost 
> its
>  network connection. The other seven vms work fine.
>  More bizarre, even rekickstarting does not work due to this issue. I 
> suspect
>  some issue on the host, but don't really have an idea what to check.
>  Host and virtual machines all run CentOS6.3 plus all patches. The 
> issue
>  persists through a host reboot.
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Are you sure the VNIC is bound to the proper bridge? I'd do a "virsh 
dumpxml $domain" and compare the network settings, see if there's 

Sent from the Delta quadrant using Borg technology!


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