--- version: rssac002v3 service: i.root-servers.net start-period: '2016-06-01T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6197555078 dns-udp-queries-received-ipv6: 463135729 dns-tcp-queries-received-ipv4: 17467917 dns-tcp-queries-received-ipv6: 620272 dns-udp-responses-sent-ipv4: 6195921184 dns-udp-responses-sent-ipv6: 468027947 dns-tcp-responses-sent-ipv4: 17788431 dns-tcp-responses-sent-ipv6: 626171