--- version: rssac002v3 service: d.root-servers.net start-period: '2018-12-21T00:00:00Z' end-period: '2018-12-21T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6264131007 dns-udp-queries-received-ipv6: 1446269665 dns-tcp-queries-received-ipv4: 378030364 dns-tcp-queries-received-ipv6: 42298440 dns-udp-responses-sent-ipv4: 6264144172 dns-udp-responses-sent-ipv6: 1446136813 dns-tcp-responses-sent-ipv4: 377709293 dns-tcp-responses-sent-ipv6: 42271497