Super node setup - certification failed,- no valid IP addresses found

Dear Zen users,

I am trying to setup my second home PC as dedicated Super Node.
However, I run into difficulties. I bough a domain, linked the A record to the IP4 and the AAAA record to my IP6 address, however when attempting to get a certificate, it fails.

Everything works until Part 6, step 2 of the Super Node setup guide.

When I enter the command
sudo certbot certonly -n --agree-tos --register-unsafely-without-email --standalone -d $FQDN

I get the following error

Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator standalone, Installer None
Obtaining a new certificate
Performing the following challenges:
http-01 challenge for
Waiting for verification...
Cleaning up challenges
Failed authorization procedure. (http-01): urn:ietf:params:acme:error:dns :: No valid IP addresses found for

 - The following errors were reported by the server:

   Type:   None
   Detail: No valid IP addresses found for

I have no idea how to get past this error. However, I did notice something strange that might be related to the problem. IP4 ping works (ping -c 3 -4), however IP6 ping (ping -c 3 -6), only works when I run it from any other computer.
IP4 lookup for the domain works, IP6 lookup for the domain also works.
Did anyone else get this or a similar error?

To me it seems the manual is written for users that use a hosting provider, and as such already have a domain. If you want to use your own computer the manual is a bit bare bone. For example, it impossible to run many of the commands without using sudo rights. Therefore, installing everything with a user that has sudo rights appears to be the only way. Of course I will revoke the sudo right directly after finishing the installation procedure.



Hi Norin

Please contact due to sensitivity of information.


1 Like

Thx I will do so. I do have more information in the log file which indeed I cannot post here due to its sensitive nature.

I have picked up the support ticket and will respond there