Hello everyone.
Recently I have the same issue with the explanation like @
Joseph LoBianco , exactly the same. I have put sniffers on layer 3 and captures on layer 2 and with that I could observe that the ARP packets are mal-formed when that are forwarding by the APs, this issue is only for versión zd1200_9.13.3.0.41.ap_9.13.3.0.41. The fix is applying ARP PROXY over every SSID, however isn't a root cause fix. The problem is a bug reported in latest versions refer to the modifications over ARP packets when that is forwarding by every Access-Point.
A possible root cause fix is upgrading the ruckus controller to the version zd1200_9.13.3.0.106.ap_9.13.3.0.106. this version is recommended by ruckus But sincerely I'm won't applied this version now because i need at least two critical weeks with a stable wifi.
Regards