We are going to proceed with a maintenance on one of our DNS resolver (10.6.30.8).
You may notice resolution issues with this specific resolver.
Service will be degraded, but our other resolver will still be available during this time.
We will proceed with 2 steps resulting in a short downtime (less than 30 seconds).
Start : 23-Apr-2019 1200Z 1400LT
Expected maintenance window : 10 minutes
The situation is now stable, maintenance is finished.