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If I do, for example dig delfi.lv from a PC on LAN, I get some log messages in /var/cache/bind/named.run like:

29-Oct-2020 12:01:51.905 client @0x7f2adc000cd0 192.168.1.2#37827 (delfi.lv): query: delfi.lv IN A +E(0) (192.168.1.1)

But if I do the same request from localhost (the server itself) I get the same answer, but no messages in the log file. How to fix it?

Martins Pukitis
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  • Was the query sent to the same server in the "testing locally" case? – Håkan Lindqvist Oct 29 '20 at 10:30
  • I don't know what happened, but I started getting log entries on some requests, but there is still an issue. If I do "dig PC" on localhost, where PC is 192.168.1.2, I don't get a response and no log entries, but if I do "ping PC", ping works and at the same moment I get DNS requests of PC from localhost in the log. – Martins Pukitis Oct 29 '20 at 10:42
  • I get response, if I do "dig PC.lan". I have "search lan" in /etc/resolv.conf, so both should work, right? – Martins Pukitis Oct 29 '20 at 10:47
  • Does `dig +search PC` work? – Håkan Lindqvist Oct 29 '20 at 12:45
  • New day, new issue. None of "dig PC", "dig PC.lan", "dig +search PC" work. But if I query the external name, like "dig delfi.lv", it works. I have seen this before. If I restart the server, it works again. – Martins Pukitis Oct 30 '20 at 07:16
  • "ping PC" returns "ping: PC: Temporary failure in name resolution" – Martins Pukitis Oct 30 '20 at 07:17
  • When dig was failing, systemd-resolved was printing "Server returned error NXDOMAIN, mitigating potential DNS violation DVE-2018-0001, retrying transaction with reduced feature level UDP." After restarting systemd-resolved "dig PC.lan" and "dig +search PC" works, but "dig PC" doesn't. No error from systemd-resolved. – Martins Pukitis Nov 07 '20 at 20:15

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