Ubuntu Server Name Resolution fails after upgrading to 20.04 from 18.04

Asked Sep 07 '20 at 18:52

Active Sep 09 '20 at 13:16

Viewed 549 times

Immediately after upgrading Ubuntu Server from 18.04 to 20.04 name resolution stopped working. If I edit /etc/resolv.conf and replace nameserver 127.0.0.1 with nameserver 8.8.8.8 then everything works until reboot when /etc/resolv.conf is overwritten again. I have read that it should be 127.0.0.53 in resolv.conf but mine is 127.0.0.1 and even setting it to 127.0.0.53 doesn't work.

I have read many similar problems but none have actual solutions just work arounds that don't address the problem. Any help finding the answer would be appriciated.

edited Sep 09 '20 at 13:16

Melebius

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asked Sep 07 '20 at 18:52

KeithW

Here's how to disable resolved. How to disable systemd-resolved in Ubuntu? Afterwards, you can delete the /etc/resolv.conf symlink and make your own /etc/resolv.conf file. – Artur Meinild Sep 07 '20 at 18:57
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Why would I want to disable the intended resolver though? This is not fixing the problem it is just a workaround. – KeithW Sep 07 '20 at 19:07
The documentation for resolved explains the DNS settings and which configuration files to edit. – Artur Meinild Sep 07 '20 at 19:32
I have restored from backup to 18.04 – KeithW Sep 08 '20 at 17:04
Having the same problem. Been running Ubuntu 20.04 for about a year and it started happening suddenly. – Josh Oct 22 '21 at 14:59

Ubuntu Server Name Resolution fails after upgrading to 20.04 from 18.04

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