--- version: rssac002v3 service: i.root-servers.net start-period: '2021-10-17T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4709890191 dns-udp-queries-received-ipv6: 1031818654 dns-tcp-queries-received-ipv4: 451761889 dns-tcp-queries-received-ipv6: 127426194 dns-udp-responses-sent-ipv4: 4038011205 dns-udp-responses-sent-ipv6: 886827754 dns-tcp-responses-sent-ipv4: 414323587 dns-tcp-responses-sent-ipv6: 114068688