On the OVN-Kubernetes secondary networks documentation, in the localnet network attachment definition example of Configuration for a localnet switched topology section, the example lacks physicalNetworkName field and doesn't explain it.

In order to be consistent with the NodeNetworkConfigurationPolicy examples above, it must contain the physicalNetworkName field with localnet1 or localnet2 (depending on which example is the one we want to match).

A correct example would be:

{
  "cniVersion": "0.3.1",
  "name": "ns1-localnet-network",
  "type": "ovn-k8s-cni-overlay",
  "topology":"localnet",
  "physicalNetworkName": "localnet2",
  "subnets": "202.10.130.112/28",
  "vlanID": 33,
  "mtu": 1500,
  "netAttachDefName": "ns1/localnet-network",
  "excludeSubnets": "10.100.200.0/29"
}

Note that it also contains the missing comma reported at OCPBUGS-55015