--- service: i.root-servers.net start-period: '2013-12-11T00:00:00Z' end-period: '2013-12-12T00:00:05Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2429366322 dns-udp-queries-received-ipv6: 143776045 dns-tcp-queries-received-ipv4: 5386830 dns-tcp-queries-received-ipv6: 286291 dns-udp-responses-sent-ipv4: 2379134542 dns-udp-responses-sent-ipv6: 143860819 dns-tcp-responses-sent-ipv4: 5407096 dns-tcp-responses-sent-ipv6: 290946