--- service: i.root-servers.net start-period: '2014-09-04T00:00:00Z' end-period: '2014-09-05T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3196313584 dns-udp-queries-received-ipv6: 223710644 dns-tcp-queries-received-ipv4: 7658209 dns-tcp-queries-received-ipv6: 273185 dns-udp-responses-sent-ipv4: 3135410540 dns-udp-responses-sent-ipv6: 223590843 dns-tcp-responses-sent-ipv4: 7376200 dns-tcp-responses-sent-ipv6: 272001