Package: openssh-server Version: 1:9.1p1-1 Severity: minor After upgrade from 1:9.0p1-1+b1 to 1:9.1p1-1 sshd starts under systemd as standalone daemon only.
1. File /lib/systemd/system/ssh@.service is missing in 1:9.1p1-1, while /lib/systemd/system/ssh.socket is present. So sshd can not be run as inetd-style service, because ".socket" requires apropriate "@.service" unit. 2. Unit file /lib/systemd/system/ssh.socket has considerable changes in comparison with old 1:9.0p1-1+b1. First, it's [Unit] section has "Before=sockets.target", and [Install] section has "WantedBy=sockets.target", it seems contradictionry to me. Then, old version 1:9.0p1-1+b1 has two options in this section: "Before=ssh.service" and "Conflicts=ssh.service". It prevents from concurent access to listening socket. New package 1:9.1p1-1 has no such options. Result: with ssh.service=disabled and ssh.socket=enabled port 22 is listened by two process: by systemd and by sshd daemon. All incoming connections are handled by standalone sshd daemon, probably because systemd can't handle them due to absence of @.service unit file. If unit files ssh.socket and ssh@.service are taken from old package, all works right as expected. -- Eugene Berdnikov