--- version: rssac002v3 service: i.root-servers.net start-period: '2021-09-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4889048792 dns-udp-queries-received-ipv6: 1032077946 dns-tcp-queries-received-ipv4: 564736091 dns-tcp-queries-received-ipv6: 145773115 dns-udp-responses-sent-ipv4: 4271311034 dns-udp-responses-sent-ipv6: 898721816 dns-tcp-responses-sent-ipv4: 554337203 dns-tcp-responses-sent-ipv6: 132821562