--- service: i.root-servers.net start-period: '2013-10-08T00:00:00Z' end-period: '2013-10-09T00:00:05Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2451689493 dns-udp-queries-received-ipv6: 130856349 dns-tcp-queries-received-ipv4: 4111997 dns-tcp-queries-received-ipv6: 150817 dns-udp-responses-sent-ipv4: 2532904677 dns-udp-responses-sent-ipv6: 139447290 dns-tcp-responses-sent-ipv4: 4176782 dns-tcp-responses-sent-ipv6: 171807