--- version: rssac002v3 service: i.root-servers.net start-period: '2019-06-03T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1067482730 dns-udp-queries-received-ipv6: 257015457 dns-tcp-queries-received-ipv4: 13037243 dns-tcp-queries-received-ipv6: 2144523 dns-udp-responses-sent-ipv4: 1069901797 dns-udp-responses-sent-ipv6: 257413938 dns-tcp-responses-sent-ipv4: 12573857 dns-tcp-responses-sent-ipv6: 2154607