I am curious as to what I am seeing while monitoring my WLAN and seeing this oddity.  I have never seen this before on any other WLAN except Meraki.  This appears on my MR36 network, and a customer's MR44 network.  If we have an SSID of say, "Business" and "Guest", and looking at the various BSSIDs for both the 5 gHz and 2.4 gHz channels, they are seen fine while using a Netally Aircheck G2 device, but we also start to see a [HIDDEN] network as well using a OUI of a6:18:88 in the frames captured, and the remainder matches the APs themselves so we know it is the Meraki devices doing this.  They appear beaconing as WEP and only using 802.11b and g and while reviewing the packet capture done at the AP level, the SSID is "SSID=Wildcard".  I am looking for an explanation as to what this is being used for. ... View more