We're currently seeing packet loss affecting some routes via one of our transit providers. We're investigating as a matter of urgency.
15:55 UTC: Throughput on the affected circuit has now returned to normal. If you're still experiencing network performance issues then please contact email@example.com. We're currently continuing to investigate the cause and will provide more information here when available.
16:30 UTC: We haven't seen any further performance problems, but we're still waiting for more details of the incident from one of our upstream transit providers.
20:00 UTC: We're expecting a full outage report to be issued by the provider tomorrow (2018-04-20).
2018-04-24: The outage report indicates the cause was "human error" and that change procedures have been reviewed and updated to prevent a repeat incident in future.