--- version: rssac002v3 service: i.root-servers.net start-period: '2018-12-06T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6001760980 dns-udp-queries-received-ipv6: 1134835631 dns-tcp-queries-received-ipv4: 134926652 dns-tcp-queries-received-ipv6: 27912710 dns-udp-responses-sent-ipv4: 5941544247 dns-udp-responses-sent-ipv6: 1147781320 dns-tcp-responses-sent-ipv4: 132176641 dns-tcp-responses-sent-ipv6: 27121668