--- service: i.root-servers.net start-period: '2014-04-06T00:00:00Z' end-period: '2014-04-07T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2443600939 dns-udp-queries-received-ipv6: 176236978 dns-tcp-queries-received-ipv4: 5308204 dns-tcp-queries-received-ipv6: 260872 dns-udp-responses-sent-ipv4: 2392428634 dns-udp-responses-sent-ipv6: 176587953 dns-tcp-responses-sent-ipv4: 5248756 dns-tcp-responses-sent-ipv6: 261792