Dependability in IoT networks largely relies on the robustness of a routing protocol such as \textitRouting Protocol for Low-power and Lossy Networks (RPL). Routing is expected to be secure and resilient, in particular against adversaries who try to break into the topology or disturb the overall operation of the network. In this demonstration, we will showcase \textitTrust Anchor Interconnection Loop (TRAIL)---our approach to securing RPL that successfully prevents attacks on the topology and isolates attacking nodes.