[Bug 1870135] [NEW] Focal Fossa : Systemd show warning when username or groupname contain a dot

[Cyril Buquet]

Public bug reported:

I am currently working on ubuntu 20.04 server
when username contain a dot, systemd show warning.

how to test :

useradd u.user
su - u.user

Output : 
Creating directory '/home/u.user'.
Bad user or group name "u.user", accepting for compatibility.

In my real life, i have this problem with Active Directory groups that
contains a dot.

More information about this from my search : 
https://github.com/systemd/systemd/pull/13244
https://bugzilla.redhat.com/show_bug.cgi?id=1717603

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

** Package changed: chrony (Ubuntu) => systemd (Ubuntu)

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https://bugs.launchpad.net/bugs/1870135

Title:
  Focal Fossa : Systemd show warning when username or groupname contain
  a dot

Status in systemd package in Ubuntu:
  New

Bug description:
  I am currently working on ubuntu 20.04 server
  when username contain a dot, systemd show warning.

  how to test :

  useradd u.user
  su - u.user

  Output : 
  Creating directory '/home/u.user'.
  Bad user or group name "u.user", accepting for compatibility.

  In my real life, i have this problem with Active Directory groups that
  contains a dot.

  More information about this from my search : 
  https://github.com/systemd/systemd/pull/13244
  https://bugzilla.redhat.com/show_bug.cgi?id=1717603

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