--- service: i.root-servers.net start-period: '2014-06-01T00:00:00Z' end-period: '2014-06-02T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2455908350 dns-udp-queries-received-ipv6: 233372888 dns-tcp-queries-received-ipv4: 6635652 dns-tcp-queries-received-ipv6: 332752 dns-udp-responses-sent-ipv4: 2386116359 dns-udp-responses-sent-ipv6: 232835802 dns-tcp-responses-sent-ipv4: 6761277 dns-tcp-responses-sent-ipv6: 333911