--- version: rssac002v3 service: i.root-servers.net start-period: '2021-10-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4690739493 dns-udp-queries-received-ipv6: 1196809739 dns-tcp-queries-received-ipv4: 466248696 dns-tcp-queries-received-ipv6: 142560054 dns-udp-responses-sent-ipv4: 4215961767 dns-udp-responses-sent-ipv6: 1059005942 dns-tcp-responses-sent-ipv4: 458248385 dns-tcp-responses-sent-ipv6: 126952306