--- service: i.root-servers.net start-period: '2015-03-08T00:00:00Z' end-period: '2015-03-09T00:00:06Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2879736663 dns-udp-queries-received-ipv6: 233841524 dns-tcp-queries-received-ipv4: 6684649 dns-tcp-queries-received-ipv6: 211846 dns-udp-responses-sent-ipv4: 2848092325 dns-udp-responses-sent-ipv6: 237671466 dns-tcp-responses-sent-ipv4: 6739943 dns-tcp-responses-sent-ipv6: 219939