--- service: i.root-servers.net start-period: '2014-09-10T00:00:00Z' end-period: '2014-09-11T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3298284502 dns-udp-queries-received-ipv6: 219956298 dns-tcp-queries-received-ipv4: 7065351 dns-tcp-queries-received-ipv6: 266033 dns-udp-responses-sent-ipv4: 3239176661 dns-udp-responses-sent-ipv6: 219923241 dns-tcp-responses-sent-ipv4: 6749612 dns-tcp-responses-sent-ipv6: 264947