--- service: i.root-servers.net start-period: '2013-08-04T00:00:00Z' end-period: '2013-08-05T00:00:16Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1844099159 dns-udp-queries-received-ipv6: 133461864 dns-tcp-queries-received-ipv4: 3989906 dns-tcp-queries-received-ipv6: 181661 dns-udp-responses-sent-ipv4: 1793477537 dns-udp-responses-sent-ipv6: 133435995 dns-tcp-responses-sent-ipv4: 3976059 dns-tcp-responses-sent-ipv6: 181291