in the past week, another repeat case (DCS-930L, wired, v1.11; and DCS-932L, wifi, v1.09)
We've updated all the DCS-930s to v1.11 now.
Note: another DCS-930L at a remote location, still operating with firmware v1.10, has *never* done this; so it may be an interaction with our local equipment (router?), but I don't understand how it can happen.