[CentOS-virt] Network failure on KVM guest

lhecking at users.sourceforge.net lhecking at users.sourceforge.net
Wed Oct 3 07:16:37 EDT 2012

 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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