--- service: i.root-servers.net start-period: '2013-08-29T00:00:00Z' end-period: '2013-08-30T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2293076896 dns-udp-queries-received-ipv6: 146309312 dns-tcp-queries-received-ipv4: 4695325 dns-tcp-queries-received-ipv6: 156331 dns-udp-responses-sent-ipv4: 2238366102 dns-udp-responses-sent-ipv6: 146275426 dns-tcp-responses-sent-ipv4: 4692290 dns-tcp-responses-sent-ipv6: 157482