--- service: i.root-servers.net start-period: '2014-04-08T00:00:00Z' end-period: '2014-04-09T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2938860247 dns-udp-queries-received-ipv6: 188083641 dns-tcp-queries-received-ipv4: 6115196 dns-tcp-queries-received-ipv6: 276763 dns-udp-responses-sent-ipv4: 2875313038 dns-udp-responses-sent-ipv6: 188329757 dns-tcp-responses-sent-ipv4: 6137129 dns-tcp-responses-sent-ipv6: 278080