--- service: i.root-servers.net start-period: '2014-04-29T00:00:00Z' end-period: '2014-04-30T00:00:08Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2946523749 dns-udp-queries-received-ipv6: 188873561 dns-tcp-queries-received-ipv4: 5896665 dns-tcp-queries-received-ipv6: 270726 dns-udp-responses-sent-ipv4: 2885478616 dns-udp-responses-sent-ipv6: 191953290 dns-tcp-responses-sent-ipv4: 5930419 dns-tcp-responses-sent-ipv6: 270199