Public bug reported:
Recently introduced sshd-socket-generator for socket activation in
openssh 1:9.6p1-3ubuntu3 has a bug when dealing with multiple Port or
ListenAddress entries in the sshd configuration.
If you have multiple Port or ListenAddress and one of them is for port
22, it just skips it.
To show it clearly, here is an example:
Port 22
Port 1024
It generates:
ListenStream=
ListenStream=1024
Now nothing is listening to port 22, hence breaking existing
configurations.
This was tested on 1:9.6p1-3ubuntu11.
The intention seems to be to not generate the drop-in if only port 22 is
in use, but it does not account for the case of multiple Port or
ListenAddress where one of them is for port 22.
** Affects: openssh (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2059872
Title:
Unable to listen on port 22 if multiple Port= present in sshd
configuration
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