Comment # 1 on bug 1171012 from Thorsten Kukuk

(In reply to Robert Dinse from comment #0)
> I have an OpenSuse Tumbleweed machine as part of an NIS network. 
> Authentication is shared for all users across the network via NIS.  A couple
> of months ago an update to Tumbleweed broke NIS severely.  It took me a long
> time
> to determine what was wrong but what is happening is that it is originating
> the
> connections to the NIS servers using a non-priviledged port, and because of
> that
> can not obtain the map passwd.adjunct.byname or byuid, because these maps are
> available to root users / privileged ports only.
> 
>      I saw another bug that had narrowed this down to a specific library but
> I
> can not find it because search here is not working, it hangs indefinitely.

That was a change in libtirpc, I thought we reverted it...
But using this privileged/non-provileged port "feature" does not give you any
kind of additional security.