[Bug 3924] New: IPQoS keyword leads to use the last value instead of first one set

[bugzilla-daemon at mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=3924

            Bug ID: 3924
           Summary: IPQoS keyword leads to use the last value instead of
                    first one set
           Product: Portable OpenSSH
           Version: 10.2p1
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P5
         Component: sshd
          Assignee: unassigned-bugs at mindrot.org
          Reporter: rmetrich at redhat.com

>From `sshd_config(5)` manpage, "For each keyword, the first obtained
value will be used."

It seems this is not true for `IPQoS` setting, as shown below.
I compiled latest openssh-portable code (commit
723b76c8a358875cd53376c9a169887ba7a4b088):

~~~
# /usr/local/sbin/sshd -V
OpenSSH_10.2p1, OpenSSL 3.5.1 1 Jul 2025

# cat sshd_config
IPQoS af11
IPQoS af12

# /usr/local/sbin/sshd -T -f ./sshd_config | grep -i ipqos
ipqos af12 af12
~~~

Here above I'm expecting "af11" to be considered.

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