"Inspired" by Timeout - no response from (which?) upstream DNS server - #5 by rdwebdesign I request that this unspecific and very undetailed message should be changed/adjusted so that is clear if a single one DNS upstream server (and which one) or all of them are not responding.
Example of this message:
2025-02-20 12:42:33.694 CET [67/T103] ERROR: Cannot receive UDP DNS reply: Timeout - no response from upstream DNS server
2025-02-20 12:42:35.710 CET [67/T103] ERROR: Cannot receive UDP DNS reply: Timeout - no response from upstream DNS server
2025-02-20 12:42:37.726 CET [67/T103] ERROR: Cannot receive UDP DNS reply: Timeout - no response from upstream DNS server
2025-02-20 12:42:39.742 CET [67/T103] ERROR: Cannot receive UDP DNS reply: Timeout - no response from upstream DNS server
2025-02-20 12:42:41.758 CET [67/T103] ERROR: Cannot receive UDP DNS reply: Timeout - no response from upstream DNS server
2025-02-20 12:42:43.774 CET [67/T103] ERROR: Cannot receive UDP DNS reply: Timeout - no response from upstream DNS server
2025-02-21 06:36:38.756 CET [79/T122] ERROR: Cannot receive UDP DNS reply: Timeout - no response from upstream DNS server
2025-02-21 06:36:40.772 CET [79/T122] ERROR: Cannot receive UDP DNS reply: Timeout - no response from upstream DNS server
2025-02-21 06:36:42.789 CET [79/T122] ERROR: Cannot receive UDP DNS reply: Timeout - no response from upstream DNS server
2025-02-21 06:36:44.996 CET [79/T122] ERROR: Cannot receive UDP DNS reply: Timeout - no response from upstream DNS server