--- service: i.root-servers.net start-period: '2014-03-17T00:00:00Z' end-period: '2014-03-18T00:00:05Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2624821497 dns-udp-queries-received-ipv6: 180967486 dns-tcp-queries-received-ipv4: 5680740 dns-tcp-queries-received-ipv6: 314813 dns-udp-responses-sent-ipv4: 2568918046 dns-udp-responses-sent-ipv6: 181088958 dns-tcp-responses-sent-ipv4: 5668007 dns-tcp-responses-sent-ipv6: 317140