Certbot webroot challenge failes but webserver seems ok

Please fill out the fields below so we can help you better. Note: you must provide your domain name to get help. Domain names for issued certificates are all made public in Certificate Transparency logs (e.g. crt.sh | example.com), so withholding your domain name here does not increase secrecy, but only makes it harder for us to provide help.

My domain is: roer.vlet.net

I ran this command: certbot renew

It produced this output:

Saving debug log to /var/log/letsencrypt/letsencrypt.log

Processing /etc/letsencrypt/renewal/roer.vlet.net.conf


Renewing an existing certificate for roer.vlet.net

Certbot failed to authenticate some domains (authenticator: webroot). The Certificate Authority reported these problems:
Domain: roer.vlet.net
Type: connection
Detail: 77.171.80.214: Fetching https://roer.vlet.net/.well-known/acme-challenge/nlvD22M8ICs3qiBbPvwTXRvIaVrhlYvTXlrrXlBgVWI: Error getting validation data

Hint: The Certificate Authority failed to download the temporary challenge files created by Certbot. Ensure that the listed domains serve their content from the provided --webroot-path/-w and that files created there can be downloaded from the internet.

Failed to renew certificate roer.vlet.net with error: Some challenges have failed.


All renewals failed. The following certificates could not be renewed:
/etc/letsencrypt/live/roer.vlet.net/fullchain.pem (failure)


1 renew failure(s), 0 parse failure(s)
Ask for help or search for solutions at https://community.letsencrypt.org. See the logfile /var/log/letsencrypt/letsencrypt.log or re-run Certbot with -v for more details.

My web server is (include version): Apache 2.4.62

The operating system my web server runs on is (include version): Debian GNU/Linux 12

My hosting provider, if applicable, is: Not applicable, this is my home-server

I can login to a root shell on my machine (yes or no, or I don't know): yes

I'm using a control panel to manage my site (no, or provide the name and version of the control panel): no, do everything using SSH and VIM.

The version of my client is (e.g. output of certbot --version or certbot-auto --version if you're using Certbot): 2.1.0

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Please note the webserver seems OK, if I manually create a file at given location (using touch /var/www/html/.well-known/acme-challenge/JVkJP2HBrVaQRMR4by6TlWv4MXSvZcMpw5PzHcr6xms) I am able to retrieve that one...

Ok, after some additional research I found the new Fritz!Box firmware (8.0.0, remember? Never run a .0 version...) f*cked up my IPv6 port-forwardings...

You may close this ticket!

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