--On Wednesday, October 03, 2018 9:40 AM -0400 Eric Garver
<egarver(a)redhat.com> wrote:
They are two different packages that manage the underlying iptables
firewall in different ways. They should never be used simultaneously.
Note that this means you shouldn't use the systemd iptables service. You
can still use the command line iptables commands to inspect the tables that
firewalld creates.