Hello there! I'm experiencing the same DNS problem but with the Guest SSID. We have web authentication in place through a NAC guest server and some pre-authentication ACL. The DNS server is in our DMZ. After authenticating everything works fine then ...

So I'm not the only one with this issue! We have two SSID, an internal and a guest one. No probs with the internal, or at least no one complained, but frequent drops with the guest SSID.Current firmware is the 6.0.199.4 which we recently updated from...