Comment 10 for bug 1871465

First of all, I have changed the SRU description in 'Test Plan' section a bit, to be more precisely. We could assume the fix didn't work if I would leave it as it did before.
I've added information that we should look for the changes within the specific area in the manpage, so the steps are obvious now.

Fix works, package 1:8.2p1-4ubuntu0.6 fixes the bug.

I've created the focal container using steps from the [Test Plan] section listed above in the Bug Description and inside that container I typed in:

$ apt policy openssh-server

The output:

Installed: 1:8.2p1-4ubuntu0.5
  Candidate: 1:8.2p1-4ubuntu0.6
  Version table:
     1:8.2p1-4ubuntu0.6 500
        500 http://archive.ubuntu.com/ubuntu focal-proposed/main amd64 Packages
 *** 1:8.2p1-4ubuntu0.5 500
        500 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     1:8.2p1-4ubuntu0.2 500
        500 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages
     1:8.2p1-4 500
        500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages

Then I have typed in:

$ man sshd_config
and
$ man ssh_config

I've noticed that nothing has changed there and ssh-rsa entries still exist in the manpage within the CASignatureAlgorithms section. So the problem still existed, because as we could see in the output, the package version was not the one where the fix is.

Then I've upgraded both openssh-server and openssh-client using:
$ apt install openssh-server=1:8.2p1-4ubuntu0.6
$ apt install openssh-client=1:8.2p1-4ubuntu0.6

Later I've typed in:

$ apt policy openssh-server
to check if installed version is changed and we see that we have new version installed (with fix)

 Installed: 1:8.2p1-4ubuntu0.6
  Candidate: 1:8.2p1-4ubuntu0.6
  Version table:
 *** 1:8.2p1-4ubuntu0.6 500
        500 http://archive.ubuntu.com/ubuntu focal-proposed/main amd64 Packages
        100 /var/lib/dpkg/status
     1:8.2p1-4ubuntu0.5 500
        500 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
     1:8.2p1-4ubuntu0.2 500
        500 http://security.ubuntu.com/ubuntu focal-security/main amd64 Packages
     1:8.2p1-4 500
        500 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages

Finally when I opened the manpage, typing:
$ man ssh_config

the problem did not exist, so the fix works.