Dns not updating
ISC has made a note of the excessive traffic generated by Microsoft DNS servers configured with a single label name in 2004 with Microsoft, which in turn disabled the ability for Microsoft DNS in Windows 2000 SP4 and newer to resolve single label names without a registry band aid.More info on this: Active Directory DNS Domain Name Single Label Names – Problematic Published by Ace Fekay, MCT, MVP DS on Nov 12, 2009 at PM 641 0
Quoted by Joseph Davies, MSFT: "IPv6 is a mandatory part of the Windows operating system and it is enabled and included in standard Windows service and application testing during the operating system development process.
Because Windows was designed specifically with IPv6 present, Microsoft does not perform any testing to determine the effects of disabling IPv6.
If IPv6 is disabled on Windows Vista, Windows Server 2008, or later versions, some components will not function.
Cloud Flare's Automatic TTL is set at 300 seconds (5 minutes), so any changes or additions you make to your Cloud Flare zone file will push out in 5 minutes or less.
Please note that your local DNS cache may take longer to update and that propagation everywhere may take a little longer than 5 minutes.