--- service: i.root-servers.net start-period: '2013-08-25T00:00:00Z' end-period: '2013-08-26T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1880527960 dns-udp-queries-received-ipv6: 136086359 dns-tcp-queries-received-ipv4: 3992726 dns-tcp-queries-received-ipv6: 151444 dns-udp-responses-sent-ipv4: 1839409964 dns-udp-responses-sent-ipv6: 136060638 dns-tcp-responses-sent-ipv4: 3976255 dns-tcp-responses-sent-ipv6: 151040