--- version: rssac002v4 service: j.root-servers.net start-period: '2021-12-06T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5717806127 dns-udp-queries-received-ipv6: 1169503106 dns-tcp-queries-received-ipv4: 326896572 dns-tcp-queries-received-ipv6: 65838614 dns-udp-responses-sent-ipv4: 5396992094 dns-udp-responses-sent-ipv6: 1157505193 dns-tcp-responses-sent-ipv4: 234239839 dns-tcp-responses-sent-ipv6: 64410164