--- version: rssac002v3 service: i.root-servers.net start-period: '2018-12-08T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5356724176 dns-udp-queries-received-ipv6: 1008352576 dns-tcp-queries-received-ipv4: 118706959 dns-tcp-queries-received-ipv6: 26158025 dns-udp-responses-sent-ipv4: 5275877788 dns-udp-responses-sent-ipv6: 1013085389 dns-tcp-responses-sent-ipv4: 114332734 dns-tcp-responses-sent-ipv6: 25427691