This document is about PowerDNS 4.X. If you have PowerDNS 3.X, please see the PowerDNS 3.X documentation

Before upgrading, it is advised to read the changelog. When upgrading several versions, please read all notes applying to the upgrade.

4.0.3 to 4.0.4

One setting has been added to limit the risk of overflowing the stack:

4.0.0 to 4.0.1

Two settings have changed defaults, these new defaults decrease CPU usage: