Differences in the name of the upstream server

The screenshots below show v5 and v6, using the same upstream server 169.254.0.53
In v5, it will automatically

There is also a problem that the total request will be displayed incorrectly in version v6 (it seems to be white)

You are pointing out that the name is resolved in v5 but not v6.

I have three questions:

  1. Is 169.254.0.53 able to resolve its own name, i.e., does
    dig -x 169.254.0.53 @169.254.0.53
    
    return the expected name?
  2. If not: Have you configured conditional forwarding on your Pi-hole v5?
  3. If not: Have you set the hostname manually somewhere in your v5 Pi-hole (e.g. /etc/hosts, local DNS records, ...)?

Are you using a plugin that modifies webpages styling (e.g. DarkReader)? I'm asking because your choice of color does not match either of the default dark colors offered by Pi-hole:

midnight

deep-midnight

  1. Upstream name problem

  1. Style problem, my Google browser is set to Dark themes.

Your screenshot shows No for no. 1, how about the others?

Screenshot 1, the dig command result you provided
Screenshot 2, pihole's docker-compose configuration file
Screenshot 3, the upstream server's docker-compose configuration file

Screenshot 1 answers the first question but the compose file can't answer the other questions.

  • Did you configured Conditional Forwarding in Pi-hole web interface?
    Found in: Settings page - DNS tab, scrolldown the page until the end.
  • Did you change the file /etc/hosts inside the container?
  • Did you configured hostnames via Web Interface, page Local DNS > DNS records?

If you still can't find the hostnames, maybe a Debug Log will help us.