yum update on RHEL Workstation 6.7 fails with Protected multilib versions: libipa_hbac-1.12.4-47.el6_7.7.i686 != libipa_hbac-1.12.4-47.el6_7.8.x86_64

Issue

When running yum update on RHEL Workstation 6.7, dependency conflict occurs:

*Error :  Multilib version problems found. This often means that the 
root**
**         cause is something else and multilib version checking is just**
**         pointing out that there is a problem. Eg.:*

            1. You have an upgrade for libipa_hbac which is missing some
               dependency that another package requires. Yum is trying to
               solve this by installing an older version of libipa_hbac of the
               different architecture. If you exclude the bad architecture
               yum will tell you what the root cause is (which package
               requires what). You can try redoing the upgrade with
               --exclude libipa_hbac.otherarch ... this should give you 
               an error  message showing the root cause of the problem.

            2. You have multiple architectures of libipa_hbac installed, but
               yum can only see an upgrade for one of those arcitectures.
               If you don't want/need both architectures anymore then you
               can remove the one with the missing update and everything
               will work.

            3. You have duplicate versions of libipa_hbac installed already.
               You can use "yum check" to get yum show these errors.

          ...you can also use --setopt=protected_multilib=false to remove
          this checking, however this is almost never the correct thing to
          do as something else is very likely to go wrong (often causing
          much more problems).

          Protected multilib versions: 
libipa_hbac-1.12.4-47.el6_7.7.i686 != libipa_hbac-1.12.4-47.el6_7.8.x86_64