--- version: rssac002v3 service: i.root-servers.net start-period: '2021-12-25T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5931171813 dns-udp-queries-received-ipv6: 1395809892 dns-tcp-queries-received-ipv4: 592956369 dns-tcp-queries-received-ipv6: 78327184 dns-udp-responses-sent-ipv4: 5235272873 dns-udp-responses-sent-ipv6: 1295920935 dns-tcp-responses-sent-ipv4: 590166189 dns-tcp-responses-sent-ipv6: 63191651