Setup cluster using ELB which ip is not in machineNetworks, eg. 10.10.137.32 is the ELB ip and machineNetworks CIDR is 192.168.80.0/22. 

After cluster is ready.  the network operator show error: 

"network                                    4.16.0-0.nightly-multi-2024-05-16-165918   True        True          True       51m     Error while synchronizing spec and status of infrastructures.config.openshift.io/cluster: Error on validating API VIPs and Machine Networks: VIP '10.10.137.32' cannot be found in any machine network"

    4.16.0-0.nightly-multi-2024-05-16-165918

    always

    1. setup cluster with ELB which is not in machineNetworks and LB is usermanaged
    2.
    3.
    

    the network operator show error: 

"network 4.16.0-0.nightly-multi-2024-05-16-165918 True True True 51m Error while synchronizing spec and status of infrastructures.config.openshift.io/cluster: Error on validating API VIPs and Machine Networks: VIP '10.10.137.32' cannot be found in any machine network"

network operator should not report error. 

  There is workaround is we can update the ELB ip cidr in infrastructures.config.openshift.io/cluster by manual.