Issue with predeployed server

Hi,
I am trying tripleo with predeployed servers . I am trying to depoy with single nic multiple vlans. I have not exposed any external endpoint in undercloud.
so when i deploy overcloud it fails in pingiptests for external network .it sets any radom ip in my allocation subnet for external network as controller.external and overcloud.localdomain and tries to pig these ip which is not present in machine hence it fails.
Is there any way to explicitely define external ip for control and compute. we do define ctlplane ip in DeployedServerPortMap but adding other network does not seem to work..

Are we missing on something or is there any other yaml in picture