--- service: i.root-servers.net start-period: '2014-10-18T00:00:00Z' end-period: '2014-10-19T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2519125247 dns-udp-queries-received-ipv6: 195886108 dns-tcp-queries-received-ipv4: 6454147 dns-tcp-queries-received-ipv6: 191765 dns-udp-responses-sent-ipv4: 2477890767 dns-udp-responses-sent-ipv6: 198846153 dns-tcp-responses-sent-ipv4: 6522535 dns-tcp-responses-sent-ipv6: 194326