Hello Team,

While deploying OCP 4.15 [ 4.15.0-rc.4 ] using IPI method via Static IP approach it recreates the controlplane node with DHCP IP in loop and deletes one of the node which has static ip. 

After 3 master node are created with static IP, new node is spinned up with DHCP IP instead of static ip as mentioned in install-config.yaml file.

Also observed controlplanemachineset is actived by default for vsphere with below values:

$ oc get controlplanemachinesets -A 
NAMESPACE               NAME      DESIRED   CURRENT   READY   UPDATED   UNAVAILABLE   STATE    AGE
openshift-machine-api   cluster   3         4         4       1                       Active   26m

Install OCP 4.15 with IPI static IP    

    1. Deploy OCP 4.15 version cluster on Vsphere using static IP [ 3 ControlPlane + 2 Compute ] 
    

 Spins extra master with DHCP IP and deletes the older controlPlane node deployed with static IP. This steps keeps on repeating in loop.

 Should spin only 3 master with static IP    

   Shared the install-config and steps perform docs with outputs.
 https://docs.google.com/document/d/1CWIcSazXMfkrBfWchnhq9O8QQEqqDs6uLCvsQeIX-1I