--- service: i.root-servers.net start-period: '2013-05-05T00:00:00Z' end-period: '2013-05-06T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1814004939 dns-udp-queries-received-ipv6: 108677465 dns-tcp-queries-received-ipv4: 2711118 dns-tcp-queries-received-ipv6: 143064 dns-udp-responses-sent-ipv4: 1821337227 dns-udp-responses-sent-ipv6: 115827397 dns-tcp-responses-sent-ipv4: 2936255 dns-tcp-responses-sent-ipv6: 145543