error: Failed to add tap interface 'vnet%d' to bridge 'br0': No such file or directory

Solution Unverified - Updated -

Issue

When attempting to start a guest manually after rebooting a KVM host,we see the following message

virsh #
virsh # start shq-logback-01
error: Failed to start domain shq-logback-01
error: Failed to add tap interface 'vnet%d' to bridge 'br0': No such file or directory

Environment

  • RHEL 5,6
  • KVM guest on Ethernet bridge or default libvirt network

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