NodeNetworkStatus..status.currentState.interfaces[].ipv4.address[].valid-life-time and preferred-life-time are updated every minute if there are dhcp interfaces on the node. This creates pointless burden on the API server.

kubernetes-nmstate-operator.4.20.0-202511110624  

100%

$ oc get nns -o yaml | yq '.items[].status.currentState.interfaces[] | select(.name == "br-ex") | .ipv4.address[]? | select(."valid-life-time") | ."valid-life-time"'     

Shows different values as time advances, even though there is no change in the network status

Report the timestamp where dhcp expires, or nothing at all.