Using useradd with symbolic links in /etc/skel creates a
symbolic link in the user's home directory that points to a
file that is different than that in /etc/skel.
For example, with "core -> /dev/null" in /etc/skel, the file
that is created in the home directory is
"core -> /dev/null???`???????_???"
This outcome is the same for any symbolic link to any file;
however, the filename that the link points to in the home
directory is different for each.
I have verified this to be true with shadow-utils-980403-12. This is
being assigned to a developer.
Fixed in 6.2