Comment 2 for bug 1939678

Hello Horst and thanks for your bug report. I think I'm able to reproduce the issue and hopefully I came up with a "more minimal" configuration. As a first step to better understand what's going on here I'd like to check with you that my config does indeed cause the problem.

On a clean Impish system I did the folowing:

--- reproducer (tentative) ---

1. apt install apache2
2. Create/etc/apache2/sites-available/management.conf with:

<VirtualHost 127.0.0.1:80>
    <Location /balancer-manager>
        SetHandler balancer-manager
    </Location>

    LogLevel debug
    ErrorLog ${APACHE_LOG_DIR}/management_error.log
    CustomLog ${APACHE_LOG_DIR}/management_access.log combined
</VirtualHost>

3. a2enmod proxy_balancer
4. a2ensite management
5. systemctl restart apache2

6. With a brower (in my case: Firefox) go to http://127.0.0.1/balancer-manager. A "Load Balancer Manager for 127.0.0.1" page opens.
7. Check /var/log/apache2/management_error.log and verify that is has an error line like:

[client 127.0.0.1:54490] AH10187: ignoring params in balancer-manager cross-site access

which is the problem this bug report is about.

--- end ---

Is this in your opinion a good reproducer? Is there an Ubuntu (or Debian) release where the same set of steps does *not* generate that AH10187 error?

Waiting for your reply I'm marking this bug report as Incomplete; please comment back and we'll look at it again. Thanks!

Note: I didn't mark this report as a duplicate of LP: #1842701 because I'm not confident enough it is the very same problem, but it probably is.