--- service: i.root-servers.net start-period: '2014-08-15T00:00:00Z' end-period: '2014-08-16T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2834876503 dns-udp-queries-received-ipv6: 213393642 dns-tcp-queries-received-ipv4: 7911255 dns-tcp-queries-received-ipv6: 245997 dns-udp-responses-sent-ipv4: 2781343025 dns-udp-responses-sent-ipv6: 213743901 dns-tcp-responses-sent-ipv4: 7121946 dns-tcp-responses-sent-ipv6: 247887