--- service: i.root-servers.net start-period: '2013-10-14T00:00:00Z' end-period: '2013-10-15T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2331583862 dns-udp-queries-received-ipv6: 124029751 dns-tcp-queries-received-ipv4: 4353395 dns-tcp-queries-received-ipv6: 162359 dns-udp-responses-sent-ipv4: 2405168676 dns-udp-responses-sent-ipv6: 132024578 dns-tcp-responses-sent-ipv4: 4408776 dns-tcp-responses-sent-ipv6: 174659