--- service: i.root-servers.net start-period: '2014-06-12T00:00:00Z' end-period: '2014-06-13T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2694548559 dns-udp-queries-received-ipv6: 244441825 dns-tcp-queries-received-ipv4: 6486664 dns-tcp-queries-received-ipv6: 263641 dns-udp-responses-sent-ipv4: 2638592045 dns-udp-responses-sent-ipv6: 246362239 dns-tcp-responses-sent-ipv4: 6732620 dns-tcp-responses-sent-ipv6: 264120