--- version: rssac002v3 service: i.root-servers.net start-period: '2021-12-22T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6532070682 dns-udp-queries-received-ipv6: 1460484284 dns-tcp-queries-received-ipv4: 633049932 dns-tcp-queries-received-ipv6: 66674643 dns-udp-responses-sent-ipv4: 5733011370 dns-udp-responses-sent-ipv6: 1369791309 dns-tcp-responses-sent-ipv4: 615646549 dns-tcp-responses-sent-ipv6: 51107794