I run two ENS500-AC in WDS Bridge Mode. When I am logged into the ENS500-AC that's connected directly to my wireless router I am able to ping the router using the built-in ping tool from the ENS500-AC. But I am not able to ping my router using the same tool from the second ENS500-AC that's not directly connected to the wireless router nor am I able to ping any other IP addresses on my LAN or WAN.
I am able to ping both ENS500-ACs from my laptop on the same LAN. The bridge also seem to work, since I have connectivity on the other end of the second ENS500-AC.