If the ports are blocked, open them as follows: For UFW firewall (Ubuntu / Debian and Mint) Check your firewall and confirm if port 53 (used for DNS – Domain Name Resolution ) and port 43 (used for whois lookup) are open. If the first solution did not work for you, firewall restrictions could be preventing you from successfully performing DNS queries. Then try pinging any website and the issue should be sorted out. It’s also prudent to check the status of the resolver and ensure that it is active and running as expected: $ sudo systemctl status rvice Save the changes and restart the systemd-resolved service as shown. If this file is not present or is there but you are still having the name resolution error, create one and append the Google public DNS server as shown nameserver 8.8.8.8 It contains the DNS entries that help your Linux system to resolve domain names into IP addresses.

The /etc/nf file is the resolver configuration file in Linux systems. In this article, we will look at some of the causes of the ‘ temporary failure in name resolution‘ error and solutions to this issue. This can present a grave challenge as you will not be able to update, upgrade, or even install any software packages on your Linux system. This is usually a name resolution error and shows that your DNS server cannot resolve the domain names into their respective IP addresses. Ping: : Temporary failure in name resolution

Sometimes when you try to ping a website, update a system or perform any task that requires an active internet connection, you may get the error message ‘ temporary failure in name resolution’ on your terminal.įor example, when you try to ping a website, you might bump into the error shown: :~$ ping

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