--- service: i.root-servers.net start-period: '2014-06-11T00:00:00Z' end-period: '2014-06-12T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2592639594 dns-udp-queries-received-ipv6: 245015450 dns-tcp-queries-received-ipv4: 6243684 dns-tcp-queries-received-ipv6: 258292 dns-udp-responses-sent-ipv4: 2541777328 dns-udp-responses-sent-ipv6: 248987901 dns-tcp-responses-sent-ipv4: 6478138 dns-tcp-responses-sent-ipv6: 260744