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What does the message “temporary failure in name resolution“ in the OpenVPN logs mean?

  • Published on May 27, 2026
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This generally means a DNS error, however a routing conflict can lead to this as well:

  • Is your Internet connection running over Ethernet? Make sure no local firewall is blocking the tunnel establishment to the server.

  • Is the OpenVPN server online and reachable over its domain name? Ask your provider or network administrator.

  • Make sure your INSYS router’s DNS settings are correct and it is allowed to make DNS requests.

  • Have you configured 2 or more interfaces in the same IP range? Even if net2 and net3 are in the same IP range, the OpenVPN connection will not work, and you’ll receive this error message.