--- service: i.root-servers.net start-period: '2014-10-11T00:00:00Z' end-period: '2014-10-12T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2667716536 dns-udp-queries-received-ipv6: 204804188 dns-tcp-queries-received-ipv4: 6777484 dns-tcp-queries-received-ipv6: 217968 dns-udp-responses-sent-ipv4: 2617947428 dns-udp-responses-sent-ipv6: 207720540 dns-tcp-responses-sent-ipv4: 6868679 dns-tcp-responses-sent-ipv6: 218274