--- version: rssac002v3 service: i.root-servers.net start-period: '2021-09-26T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4655705000 dns-udp-queries-received-ipv6: 1064618377 dns-tcp-queries-received-ipv4: 474142459 dns-tcp-queries-received-ipv6: 142722662 dns-udp-responses-sent-ipv4: 4161357028 dns-udp-responses-sent-ipv6: 946069348 dns-tcp-responses-sent-ipv4: 453495982 dns-tcp-responses-sent-ipv6: 127121899