not sure, but the PXE seems to enter the error state:
```
2019-03-18 13:17:23.393 7 DEBUG ironic_inspector.pxe_filter.base [-] The PXE filter driver IptablesFilter, state=initialized enters the fsm_reset_on_error context fsm_reset_on_error /usr/lib/python2.7/site-packages/ironic_inspector/pxe_filter/base.py:137
```