--- service: i.root-servers.net start-period: '2014-05-09T00:00:00Z' end-period: '2014-05-10T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2699555382 dns-udp-queries-received-ipv6: 186971249 dns-tcp-queries-received-ipv4: 6452159 dns-tcp-queries-received-ipv6: 247679 dns-udp-responses-sent-ipv4: 2645541197 dns-udp-responses-sent-ipv6: 190162124 dns-tcp-responses-sent-ipv4: 6499227 dns-tcp-responses-sent-ipv6: 250002