--- service: i.root-servers.net start-period: '2013-10-16T00:00:00Z' end-period: '2013-10-17T00:00:06Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2326935901 dns-udp-queries-received-ipv6: 129249467 dns-tcp-queries-received-ipv4: 4381712 dns-tcp-queries-received-ipv6: 177494 dns-udp-responses-sent-ipv4: 2389826898 dns-udp-responses-sent-ipv6: 137769086 dns-tcp-responses-sent-ipv4: 4442969 dns-tcp-responses-sent-ipv6: 191517