Hi, thanks for the discussion! Here is what I get: linux:/home/user # dig +trace mit.edu ;; Warning: Message parser reports malformed message packet. ; <<>> DiG 9.11.2 <<>> +trace mit.edu ;; global options: +cmd . 198198 IN NS c.root-servers.net. . 198198 IN NS d.root-servers.net. . 198198 IN NS e.root-servers.net. . 198198 IN NS f.root-servers.net. . 198198 IN NS g.root-servers.net. . 198198 IN NS h.root-servers.net. . 198198 IN NS i.root-servers.net. . 198198 IN NS j.root-servers.net. . 198198 IN NS a.root-servers.net. . 198198 IN NS k.root-servers.net. . 198198 IN NS l.root-servers.net. . 198198 IN NS m.root-servers.net. . 198198 IN NS b.root-servers.net. couldn't get address for 'c.root-servers.net': not found couldn't get address for 'd.root-servers.net': not found couldn't get address for 'e.root-servers.net': not found couldn't get address for 'f.root-servers.net': not found couldn't get address for 'g.root-servers.net': not found couldn't get address for 'h.root-servers.net': not found couldn't get address for 'i.root-servers.net': not found couldn't get address for 'j.root-servers.net': not found couldn't get address for 'a.root-servers.net': not found couldn't get address for 'k.root-servers.net': not found couldn't get address for 'l.root-servers.net': not found couldn't get address for 'm.root-servers.net': not found couldn't get address for 'b.root-servers.net': not found dig: couldn't get address for 'c.root-servers.net': no more linux:/home/user # dig -6 +trace mit.edu ;; Warning: Message parser reports malformed message packet. ; <<>> DiG 9.11.2 <<>> -6 +trace mit.edu ;; global options: +cmd . 198121 IN NS b.root-servers.net. . 198121 IN NS c.root-servers.net. . 198121 IN NS d.root-servers.net. . 198121 IN NS e.root-servers.net. . 198121 IN NS f.root-servers.net. . 198121 IN NS g.root-servers.net. . 198121 IN NS h.root-servers.net. . 198121 IN NS i.root-servers.net. . 198121 IN NS j.root-servers.net. . 198121 IN NS a.root-servers.net. . 198121 IN NS k.root-servers.net. . 198121 IN NS l.root-servers.net. . 198121 IN NS m.root-servers.net. couldn't get address for 'b.root-servers.net': not found couldn't get address for 'c.root-servers.net': not found couldn't get address for 'd.root-servers.net': not found couldn't get address for 'e.root-servers.net': not found couldn't get address for 'f.root-servers.net': not found couldn't get address for 'g.root-servers.net': not found couldn't get address for 'h.root-servers.net': not found couldn't get address for 'i.root-servers.net': not found couldn't get address for 'j.root-servers.net': not found couldn't get address for 'a.root-servers.net': not found couldn't get address for 'k.root-servers.net': not found couldn't get address for 'l.root-servers.net': not found couldn't get address for 'm.root-servers.net': not found dig: couldn't get address for 'b.root-servers.net': no more So this seems to be negative? Stefan Am Montag, 25. Februar 2019, 16:53:04 CET schrieb Bengt Gördén:
On 2019-02-25 16:18, Carlos E. R. wrote:
host -v google.com 192.168.0.1
This is probably good if you want an answer like "ping". But you can also try +trace with "dig" if the problem is more complex than just your own caching DNS server. It does a similar job as traceroute but for DNS.
dig +trace mit.edu
For v6 try: dig -6 +trace mit.edu
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