--- version: rssac002v3 service: i.root-servers.net start-period: '2018-01-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4541722179 dns-udp-queries-received-ipv6: 592046138 dns-tcp-queries-received-ipv4: 81849333 dns-tcp-queries-received-ipv6: 11238012 dns-udp-responses-sent-ipv4: 4586206530 dns-udp-responses-sent-ipv6: 639475703 dns-tcp-responses-sent-ipv4: 80902542 dns-tcp-responses-sent-ipv6: 11270020