On 26.04.18 10:10, Blason R wrote: > 9.12 is not yet stable; i believe? 9.12 is stable. 9.13 is current development. 9.11 is the current Extended Support Version (ESV). You may want to read this: https://www.isc.org/blogs/bind-release-strategy-updated/ https://kb.isc.org/article/AA-01540 Daniel