Bug#1077799: openssh-server: cannot login anymore: error "kex_exchange_identification: read: Connection reset by peer"

Package: openssh-server
Version: 1:9.8p1-1
Severity: important

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?
   * What exactly did you do (or not do) that was effective (or
     ineffective)?
   * What was the outcome of this action?
   * What outcome did you expect instead?

*** End of the template - remove these template lines ***


-- System Information:
Debian Release: trixie/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.9.12-amd64 (SMP w/8 CPU threads; PREEMPT)
Kernel taint flags: TAINT_FIRMWARE_WORKAROUND
Locale: LANG=it_IT.UTF-8, LC_CTYPE=it_IT.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages openssh-server depends on:
ii  adduser                       3.137
ii  debconf [debconf-2.0]         1.5.87
ii  init-system-helpers           1.66
ii  libaudit1                     1:3.1.2-4+b1
ii  libc6                         2.39-6
ii  libcom-err2t64 [libcom-err2]  1.47.0-2.3+b1
ii  libcrypt1                     1:4.4.36-4
ii  libgssapi-krb5-2              1.21.3-3
ii  libkrb5-3                     1.21.3-3
ii  libpam-modules                1.5.3-7
ii  libpam-runtime                1.5.3-7
ii  libpam0g                      1.5.3-7
ii  libselinux1                   3.5-2+b3
ii  libssl3t64                    3.2.2-1
ii  libwrap0                      7.6.q-33
ii  lsb-base                      11.6
ii  openssh-client                1:9.8p1-1
ii  openssh-sftp-server           1:9.8p1-1
ii  procps                        2:4.0.4-5
ii  runit-helper                  2.16.3
ii  sysvinit-utils [lsb-base]     3.09-2
ii  ucf                           3.0043+nmu1
ii  zlib1g                        1:1.3.dfsg+really1.3.1-1

Versions of packages openssh-server recommends:
ii  libpam-systemd [logind]  256.4-2
ii  ncurses-term             6.5-2
ii  xauth                    1:1.1.2-1

Versions of packages openssh-server suggests:
pn  molly-guard   <none>
pn  monkeysphere  <none>
pn  ssh-askpass   <none>
pn  ufw           <none>

-- debconf information excluded