--- service: i.root-servers.net start-period: '2014-06-04T00:00:00Z' end-period: '2014-06-05T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2924093181 dns-udp-queries-received-ipv6: 254454809 dns-tcp-queries-received-ipv4: 6534827 dns-tcp-queries-received-ipv6: 245957 dns-udp-responses-sent-ipv4: 2861400467 dns-udp-responses-sent-ipv6: 254124093 dns-tcp-responses-sent-ipv4: 6738850 dns-tcp-responses-sent-ipv6: 248398