i am using latest reachability classes ver 3.5 of apple.my issue is when i switch off wifi the reachability classes take some time to give actual status."kReachabilityChangedNotification" notification is fired after some delay.this issue is coming on iOS 8.1.1 iPad air
It appears to be a thread-blocking issue: https://github.com/tonymillion/Reachability/issues/74