pre_allocated_ips = self._uc['hosts'][self._first_controller].get('pre_allocated_ips', None)
if pre_allocated_ips:
pre_allocated_infra_external_ip = pre_allocated_ips.get('infra_external', None)
pre_allocated_ips = self._uc['hosts'][self._first_controller].get('pre_allocated_ips', None)
if pre_allocated_ips:
pre_allocated_infra_external_ip = pre_allocated_ips.get('infra_external', None)