--- service: i.root-servers.net start-period: '2013-11-08T00:00:00Z' end-period: '2013-11-09T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2403615632 dns-udp-queries-received-ipv6: 123666957 dns-tcp-queries-received-ipv4: 5168377 dns-tcp-queries-received-ipv6: 209147 dns-udp-responses-sent-ipv4: 2472671787 dns-udp-responses-sent-ipv6: 135712634 dns-tcp-responses-sent-ipv4: 5161947 dns-tcp-responses-sent-ipv6: 217144