We just received notice from DEAC NOC (datacenter where EU3.RIX located) about scheduled network maintenance on router's farm:
Would like to inform you that, due to planned works on 6th and 8th March 2017 from 04:00 till 06:00 EET, short-term intermissions might be expected in the network connection. We apologize for any inconveniences it may cause.
Customers with questions or concerns are encouraged to reach out to our Technical Support Team.