--- service: i.root-servers.net start-period: '2014-12-28T00:00:00Z' end-period: '2014-12-29T00:00:05Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2586120465 dns-udp-queries-received-ipv6: 210935967 dns-tcp-queries-received-ipv4: 6684018 dns-tcp-queries-received-ipv6: 204812 dns-udp-responses-sent-ipv4: 2571788725 dns-udp-responses-sent-ipv6: 210884758 dns-tcp-responses-sent-ipv4: 6847435 dns-tcp-responses-sent-ipv6: 208739