We've resolved the issue and are continuing to monitor the location.

We've identified the problem. This is due to the IPv6 only routing gateway that created the latency drop. We're working on a fix.

Dear,

We're experiencing some latency drops regarding our DUS-IX location. We're working on getting the latency back to original and keep monitoring the network. The latency drops also caused the outage of earlier today. Our customers regarding the DUS-IX location where already notified.