--- version: rssac002v3 service: i.root-servers.net start-period: '2021-12-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5899237713 dns-udp-queries-received-ipv6: 1267969821 dns-tcp-queries-received-ipv4: 599418988 dns-tcp-queries-received-ipv6: 70204513 dns-udp-responses-sent-ipv4: 5156884849 dns-udp-responses-sent-ipv6: 1161766472 dns-tcp-responses-sent-ipv4: 589099197 dns-tcp-responses-sent-ipv6: 62366554