Updating RHEL 7.3 to 7.6 installs several i686 packages

Issue

• Running a yum update on a RHEL 7.3 server causes several 32 bit packages to be installed. A fresh install of RHEL 7.6 does not contain these packages.

# yum update
..
.
Resolving Dependencies
--> Running transaction check
---> Package GeoIP.x86_64 0:1.5.0-11.el7 will be updated
---> Package GeoIP.x86_64 0:1.5.0-13.el7 will be an update
---> Package NetworkManager.x86_64 1:1.4.0-12.el7 will be obsoleted
---> Package NetworkManager.x86_64 1:1.12.0-10.el7_6 will be obsoleting
---> Package NetworkManager-config-server.x86_64 1:1.4.0-12.el7 will be updated
.
.
---> Package rdma-core.i686 0:17.2-3.el7 will be obsoleting
--> Processing Dependency: libc.so.6 for package: rdma-core-17.2-3.el7.i686
..

$ grep i686 var/log/yum.log | wc -l
24