--- service: i.root-servers.net start-period: '2014-10-15T00:00:00Z' end-period: '2014-10-16T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3275744455 dns-udp-queries-received-ipv6: 225274839 dns-tcp-queries-received-ipv4: 7591393 dns-tcp-queries-received-ipv6: 259426 dns-udp-responses-sent-ipv4: 3212331284 dns-udp-responses-sent-ipv6: 229055297 dns-tcp-responses-sent-ipv4: 7693890 dns-tcp-responses-sent-ipv6: 257104