Reviewer: Paul Wouters Review result: Ready I have reviewed this document as part of the security directorate's ongoing effort to review all IETF documents being processed by the IESG. These comments were written primarily for the benefit of the security area directors. Document editors and WG chairs should treat these comments just like any other last call comments. The summary of the review is that the document is Ready. This document is an overview of existing Low Power Wide Area Networks (LPWAN) technologies. As the review states, no LPWAN devices have IP capabilities at the moment. It also describes a lot of standards in this area are coming from outside the IETF. Nevertheless, a Security Section is included that lists a few of the items of concern, and how some existing IETF security technologies might not work on LPWAN.