The three leading low power WAN protocols have all been embracing several techniques to enable efficient transport of IP Internet traffic over bandwidth and resource-constrained IoT networks. This is significant because it will extend the scope of LPWAN, and outdoor IoT, beyond traditional domains such as smart metering and environmental monitoring, into industrial markets and wider smart city deployments. It will also enrich the scope of existing deployments in domains such as smart metering through deployment of more sophisticated applications that add value. In any case, the step up to efficient IP transport has become increasingly necessary as it has become mandated by utilities and other key players in the IoT realm. The most public announcement has just…