Variations from the Specification
---------------------------------

The unique-sources metric does not count traffic routed towards
the F-root instances operated by Cloudflare.

Data Issues
-----------

2025/04/08 - volume and packet size counts from Cloudflare between 2025/03/06
             and 2025/04/03 were undersampled 2:1.  The data has now been
             corrected.

2024/06/06 - unexpectedly high load-time metrics prior to 2024/06/01 were
             identified as a Cloudflare measurement error.  Actual zone
             load times were nominal throughout.

2023/11/05 - large error in traffic volume stats for 2020/04/16 resolved