CentOS virt - Oct 2012 - Network failure on KVM guest

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.

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.
>
> _______________________________________________
> CentOS-virt mailing list
> CentOS-virt at centos.org
> http://lists.centos.org/mailman/listinfo/centos-virt
Hi,

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 
difference.

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