--- service: i.root-servers.net start-period: '2013-11-07T00:00:00Z' end-period: '2013-11-08T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2407603810 dns-udp-queries-received-ipv6: 123065602 dns-tcp-queries-received-ipv4: 5341588 dns-tcp-queries-received-ipv6: 199798 dns-udp-responses-sent-ipv4: 2478270879 dns-udp-responses-sent-ipv6: 135281962 dns-tcp-responses-sent-ipv4: 5340306 dns-tcp-responses-sent-ipv6: 210036