On April 1st, 2020, at approximately 21:55 UTC, our monitoring reported issues with connectivity in our London Data Center. Prompt investigation revealed the cause to be a pair of interfaces flapping between a customer aggregation switch and a core router resulting in network instability for linodes attached to this switch. The interfaces were immediately disabled, resolving the issue. All affected services were restored at approximately 22:28 UTC. We will continue to investigate the cause of failure, after which the interfaces will be brought back into the service during a scheduled maintenance window at a later date.