Earlier tonight we encountered a bug with a Debian security update on the servers. The bug was caused by firewall rules not being created properly due to Apparmor. A fix was deployed at 02:32 UTC.
The issue only affected clients who connected during the time mentioned below. It did not affect clients who connected before the service interruption started. If you are still experiencing problems we ask that you reconnect.
Service interruption window
Start Date and Time: 2017-06-15 22:43 UTC
End Date and Time: 2017-06-16 02:32 UTC