--- version: rssac002v3 service: i.root-servers.net start-period: '2017-12-09T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4766399192 dns-udp-queries-received-ipv6: 638548275 dns-tcp-queries-received-ipv4: 87496588 dns-tcp-queries-received-ipv6: 12697740 dns-udp-responses-sent-ipv4: 4863671949 dns-udp-responses-sent-ipv6: 634526383 dns-tcp-responses-sent-ipv4: 87672935 dns-tcp-responses-sent-ipv6: 12711554