--- service: i.root-servers.net start-period: '2014-04-25T00:00:00Z' end-period: '2014-04-26T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2865109747 dns-udp-queries-received-ipv6: 181355321 dns-tcp-queries-received-ipv4: 5720105 dns-tcp-queries-received-ipv6: 268979 dns-udp-responses-sent-ipv4: 2806867036 dns-udp-responses-sent-ipv6: 184195482 dns-tcp-responses-sent-ipv4: 5723769 dns-tcp-responses-sent-ipv6: 268876