--- version: rssac002v3 service: b.root-servers.net start-period: 2018-01-01T00:00:00Z metric: traffic-volume dns-udp-queries-received-ipv4: 2254914845 dns-udp-queries-received-ipv6: 268248945 dns-tcp-queries-received-ipv4: 136842327 dns-tcp-queries-received-ipv6: 9320620 dns-udp-responses-sent-ipv4: 2156376750 dns-udp-responses-sent-ipv6: 268229946 dns-tcp-responses-sent-ipv4: 132977765 dns-tcp-responses-sent-ipv6: 4499155