Public bug reported:

Ubuntu version:  Ubuntu 18.04.3 LTS
libpam-runtime: 1.1.8-3.6ubuntu2.18.04.1

In file /etc/pam.d/sshd there is part:

# Print the message of the day upon successful login.
# This includes a dynamically generated part from /run/motd.dynamic
# and a static (admin-editable) part from /etc/motd.
session    optional     pam_motd.so  motd=/run/motd.dynamic
session    optional     pam_motd.so noupdate


but it should be:

# Print the message of the day upon successful login.
# This includes a dynamically generated part from /run/motd.dynamic
# and a static (admin-editable) part from /etc/motd.
session    optional     pam_motd.so noupdate motd=/run/motd.dynamic


Current version runs update of dynamic part of motd on every login by ssh, what 
is slowing it significantly and clearly is not what author had in mind.

** Affects: pam (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1853714

Title:
  libpam-runtime misconfigurred module option in /etc/pam.d/sshd

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