--- version: rssac002v3 service: i.root-servers.net start-period: '2021-12-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5562707840 dns-udp-queries-received-ipv6: 1218408016 dns-tcp-queries-received-ipv4: 604860026 dns-tcp-queries-received-ipv6: 69064197 dns-udp-responses-sent-ipv4: 4826328435 dns-udp-responses-sent-ipv6: 1130327578 dns-tcp-responses-sent-ipv4: 580598668 dns-tcp-responses-sent-ipv6: 62293762