If you create a NetworkAttachmentDefinition using our example, it will set macspoofchk to true. 

This will cause packet flow issues for any VM using a bonded interface, including active-backup using fail_over_mac mode 0 or 2.

4.16

Always

1. Baremetal OCP with OCP Virt Installed
2. Create NetworkAttachmentDefinition based on our example
3. Attach NICs to VMs
4. Build OCP Cluster with VMs using an active-backup nmstate bonding config

The install will fail and network traffic will be dropped due to the macspoofchk being set to true.

Successful install.

https://docs.openshift.com/container-platform/4.15/virt/vm_networking/virt-connecting-vm-to-linux-bridge.html#virt-creating-linux-bridge-nad-cli_virt-connecting-vm-to-linux-bridge