--- version: rssac002v3 service: i.root-servers.net start-period: '2021-09-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4654823832 dns-udp-queries-received-ipv6: 1067445532 dns-tcp-queries-received-ipv4: 474569771 dns-tcp-queries-received-ipv6: 138822372 dns-udp-responses-sent-ipv4: 4155564161 dns-udp-responses-sent-ipv6: 940978310 dns-tcp-responses-sent-ipv4: 448836776 dns-tcp-responses-sent-ipv6: 121557329