--- service: i.root-servers.net start-period: '2013-09-29T00:00:00Z' end-period: '2013-09-30T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1947614384 dns-udp-queries-received-ipv6: 123170821 dns-tcp-queries-received-ipv4: 4955146 dns-tcp-queries-received-ipv6: 140147 dns-udp-responses-sent-ipv4: 2012790748 dns-udp-responses-sent-ipv6: 131313051 dns-tcp-responses-sent-ipv4: 4987660 dns-tcp-responses-sent-ipv6: 159851