--- version: rssac002v3 service: i.root-servers.net start-period: '2021-11-22T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5773863276 dns-udp-queries-received-ipv6: 940415084 dns-tcp-queries-received-ipv4: 537051814 dns-tcp-queries-received-ipv6: 51108749 dns-udp-responses-sent-ipv4: 4980765724 dns-udp-responses-sent-ipv6: 869058745 dns-tcp-responses-sent-ipv4: 520119552 dns-tcp-responses-sent-ipv6: 36963629