Unbound upgrade issues

Downtime explained

Unfortunately, after upgrading Unbound from version 1.8.3 to 1.9.0, I had encountered a problem. The problem was that Unbound continued crashing after running for around five hours. So I reconfigured everything and it seems to be working back to normal.

Since I use the same server myself I know how annoying and or problematic this can be and I tried my best to solve the issue as fast as possible.