--- service: i.root-servers.net start-period: '2014-01-01T00:00:00Z' end-period: '2014-01-02T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2005273130 dns-udp-queries-received-ipv6: 127901854 dns-tcp-queries-received-ipv4: 4616538 dns-tcp-queries-received-ipv6: 242891 dns-udp-responses-sent-ipv4: 1960256439 dns-udp-responses-sent-ipv6: 128026933 dns-tcp-responses-sent-ipv4: 4673682 dns-tcp-responses-sent-ipv6: 246367