--- service: i.root-servers.net start-period: '2013-08-27T00:00:00Z' end-period: '2013-08-28T00:00:05Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2288716375 dns-udp-queries-received-ipv6: 148877657 dns-tcp-queries-received-ipv4: 5149919 dns-tcp-queries-received-ipv6: 171563 dns-udp-responses-sent-ipv4: 2237631574 dns-udp-responses-sent-ipv6: 148841150 dns-tcp-responses-sent-ipv4: 5134858 dns-tcp-responses-sent-ipv6: 172385