We have Cisco LWAPP APs with WiSM controllers installed. Some Mac Laptop users got problem to access some random websites with wireless connection. They will get "cannot find server" error at first try, but after refresh serveral times, the web site will be loaded normally. Nslookup failed to resolve the URL to IP when this problem occurr.
It seems only happen to random websites and after trying sometimes, it will be OK. With fixed LAN connections, the Mac never have such problem.
I suspect the LWAPP got problem to encrypt some DNS traffic?
Can anyone help?