--- version: rssac002v3 service: i.root-servers.net start-period: '2021-06-06T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4659678068 dns-udp-queries-received-ipv6: 846259903 dns-tcp-queries-received-ipv4: 431120579 dns-tcp-queries-received-ipv6: 102654412 dns-udp-responses-sent-ipv4: 4184497178 dns-udp-responses-sent-ipv6: 829807522 dns-tcp-responses-sent-ipv4: 381795893 dns-tcp-responses-sent-ipv6: 98227169