我们遇到了一个奇怪的情况，我们的DNS /域控制器不断失去连接到根提示服务器的能力。 这持续约5分钟，每天发生几次。
我们已经在DNS服务器上跳转，并且打开了一个命令提示符，并且能够从DNS服务器手动ping通根提示服务器，所以我们知道是不是互联网连接问题。
我们在事件期间运行了一个dcdiag，发现DNS服务器能够互相连接，但是无法连接到根提示服务器。
DNS server: 8.8.4.4 (<name unavailable>) 9 test failure on this DNS server PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 8.8.4.4 [Error details: 1460 (Type: Win32 - Description: This operation returned because the timeout period expired.)] DNS server: 8.8.8.8 (<name unavailable>) 9 test failure on this DNS server PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 8.8.8.8 [Error details: 1460 (Type: Win32 - Description: This operation returned because the timeout period expired.)] DNS server: 192.112.36.4 (g.root-servers.net.) 8 test failure on this DNS server PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 192.112.36.4 [Error details: 1460 (Type: Win32 - Description: This operation returned because the timeout period expired.)] DNS server: 192.203.230.10 (e.root-servers.net.) 8 test failure on this DNS server PTR record query for the 1.0.0.127.in-addr.arpa. failed on the DNS server 192.203.230.10 [Error details: 1460 (Type: Win32 - Description: This operation returned because the timeout period expired.)] DNS server: 192.228.79.201 (b.root-servers.net.) 8 test failure on this DNS server 发生这种情况时，我们将失去parsingFQDN的能力
所有的帮助将不胜感激。