--- service: i.root-servers.net start-period: '2014-10-09T00:00:00Z' end-period: '2014-10-10T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3176189664 dns-udp-queries-received-ipv6: 223219814 dns-tcp-queries-received-ipv4: 6715729 dns-tcp-queries-received-ipv6: 249251 dns-udp-responses-sent-ipv4: 3114389567 dns-udp-responses-sent-ipv6: 226870315 dns-tcp-responses-sent-ipv4: 6786026 dns-tcp-responses-sent-ipv6: 248315