The PUT /nio (update) endpoints for iou, dynamips and cloud copied nio.filters from the request body but never copied nio.markers. So adding a marker (e.g. a project-level global definition) to an already-created link of these node types left nio.markers empty: no mark filter was installed on uBridge and no marker.match signal was emitted. vpcs/qemu/docker already set it; mirror them (getattr for the Union NIO types).
27356da62d