Comment # 14 on bug 1113162 from Stefan Dirsch

(In reply to Stefan Dirsch from comment #13)
> Ok. kernel-default runs weak-updates script in order to create such
> symlinks. 

kernel-default-devel does this, not kernel-default. Sorry.

> Not sure, why it creates dangling links, but I cannot prevent
> that. 

Meanwhile I added the removal of such non-existing symlinks when installing the
kmp package, but I still cannot reproduce the issue
with the creation of additional folders below "/" directory.

In case you can still reproduce it, you could try to make the update of
kernel-default-devel in rpm verbose mode

  rpm -vv -Uhv kernel-default-devel... &> /tmp/log

and then attach the logfile.

But I'm afraid you need to download the RPM before with zypper

  zypper in -d  kernel-default-devel

and then find it somewhere /var/cache/zypp. :-(