Comment 1 for bug 1664255

It is still a bug. Openstack client has the provision to change router to "distributed" or "centralized" after creation using "set" command, but during creation admin can't override default behavior.

vagrant@16gb:~/devstack$ openstack router set
usage: openstack router set [-h] [--name <name>] [--description <description>]
                            [--enable | --disable]
                            [--distributed | --centralized]
                            [--route destination=<subnet>,gateway=<ip-address>]
                            [--no-route] [--ha | --no-ha]
                            [--external-gateway <network>]
                            [--fixed-ip subnet=<subnet>,ip-address=<ip-address>]
                            [--enable-snat | --disable-snat]
                            <router>
openstack router set: error: too few arguments