--- version: rssac002v3 service: i.root-servers.net start-period: '2021-12-06T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5432596936 dns-udp-queries-received-ipv6: 1013808249 dns-tcp-queries-received-ipv4: 539700917 dns-tcp-queries-received-ipv6: 48767732 dns-udp-responses-sent-ipv4: 4720186230 dns-udp-responses-sent-ipv6: 945169596 dns-tcp-responses-sent-ipv4: 517543830 dns-tcp-responses-sent-ipv6: 35155558