To delete an internal interface from a router, use the openstack router remove port or openstack router remove subnet commands shown here:

openstack router remove port <router> <port>
openstack router remove subnet <router> <subnet> 

The <port>&amp;nbsp;argument represents the name or ID of a particular port to be removed from the router, while the <subnet>&amp;nbsp;argument represents the name of ID of a subnet to be removed from the router. In either case, deleting an interface based on port or subnet results in the respective Neutron port being removed from the database.