How to block the labs measurement system

The APNIC privacy policy covers all activities undertaken at

APNIC Labs also publishes its measurement guidelines which govern the conduct of our experiments.

As a commitment to the community, Apnic Labs respects your privacy. We do not publish details of individual web fetches or the related URLs visited by anyone we measure. However, we understand that some people online don't want to be measured. Accordingly we honour two mechanisms to allow you to stop being measured by the labs system

how to set "do not track" in your browser"

The following was taken from life hacker: