--- service: i.root-servers.net start-period: '2014-06-07T00:00:00Z' end-period: '2014-06-08T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2247186539 dns-udp-queries-received-ipv6: 223356152 dns-tcp-queries-received-ipv4: 5892640 dns-tcp-queries-received-ipv6: 223702 dns-udp-responses-sent-ipv4: 2197773808 dns-udp-responses-sent-ipv6: 223074736 dns-tcp-responses-sent-ipv4: 6121129 dns-tcp-responses-sent-ipv6: 227538