If you connected a laptop or PC to the management network do you get proper IP / Gateway / and DNS serves? Next, I would see if that device could reach the Meraki DB with those settings. You could also try setting one device's DNS to 1.1.1.1 or 8.8.8.8 factory reset it and see what happens. Also, are you blocking or limiting this traffic in any way, like destination rules or limiting DNS access?
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