--- service: i.root-servers.net start-period: '2013-10-23T00:00:00Z' end-period: '2013-10-24T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2334436476 dns-udp-queries-received-ipv6: 127654817 dns-tcp-queries-received-ipv4: 4837325 dns-tcp-queries-received-ipv6: 189121 dns-udp-responses-sent-ipv4: 2409078294 dns-udp-responses-sent-ipv6: 135225275 dns-tcp-responses-sent-ipv4: 4886001 dns-tcp-responses-sent-ipv6: 198432