We are doing a general network security upgrade for all our hosts in the DK DC1 on monday starting at 10.00 CEST. We are reserving a 6 hour maintenance window, but we expect the procedure to take a lot less than that. The upgrade includes a full system upgrade of all system components. This procedure will inevitably restart the BGP-to-rack daemon we have on all hosts in our DC and during that service restart packet loss is expected. Best case is about 5 seconds of network interruption, but on heavily loaded hosts the interruption may take a while longer, maybe as much as 2-3 minutes. We expect literally ALL our customers to see this small loss of network connectivity as we roll out the upgrade across our fleet. We apologize for any inconvenience and thank you for your understanding in advance.