introspection fails with Dell R330 nodes

Hi,

After importing the Dell nodes I ran the introspection that ran for long time and at the end I get a message "socket already closed"

When checking the nodes I get the following
[stack@rhel-director ~]$ openstack baremetal node show 958429cb-0eed-4ae0-b1c0-5bf00b757e87
+------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Field | Value |
+------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| console_enabled | False |
| created_at | 2017-05-21T10:07:50+00:00 |
| driver | pxe_drac |
| driver_info | {u'drac_host': u'192.168.97.13', u'drac_password': u'******', u'drac_username': u'root', u'deploy_ramdisk': u'1c9a9bfb-c8c8-45d8-9ccb-02f5e134b95e', u'deploy_kernel': |
| | u'd7f72f24-4ba3-4b1b-a833-4d1fb6ec4e4f'} |
| driver_internal_info | {u'drac_boot_device': {u'boot_device': u'pxe', u'persistent': False}} |
| extra | {} |
| inspection_finished_at | None |
| inspection_started_at | None |
| instance_info | {} |
| instance_uuid | None |
| last_error | Failed to change power state to 'power on'. Error: 'IPL' |
| maintenance | False |
| maintenance_reason | None |
| name | None |
| ports | [{u'href': u'http://192.168.10.210:13385/v1/nodes/958429cb-0eed-4ae0-b1c0-5bf00b757e87/ports', u'rel': u'self'}, {u'href': u'http://192.168.10.210:13385/nodes/958429cb-0eed- |
| | 4ae0-b1c0-5bf00b757e87/ports', u'rel': u'bookmark'}] |
| power_state | power off |
| properties | {u'capabilities': u'boot_option:local'} |
| provision_state | manageable |
| provision_updated_at | 2017-05-21T10:10:54+00:00 |
| reservation | None |
| target_power_state | None |
| target_provision_state | None |
| updated_at | 2017-05-21T10:11:51+00:00 |
| uuid | 958429cb-0eed-4ae0-b1c0-5bf00b757e87 |
+------------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

Regards,
Samuel