--- service: i.root-servers.net start-period: '2014-08-22T00:00:00Z' end-period: '2014-08-23T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2793172941 dns-udp-queries-received-ipv6: 211943581 dns-tcp-queries-received-ipv4: 7327884 dns-tcp-queries-received-ipv6: 283366 dns-udp-responses-sent-ipv4: 2741316216 dns-udp-responses-sent-ipv6: 212311569 dns-tcp-responses-sent-ipv4: 7044304 dns-tcp-responses-sent-ipv6: 285304