Post below is addressing the question when Controller/Network RDO Mitaka Node has to have external networks of VLAN type with predefined vlan tags. Straight forward packstack deployment doesn’t allow to achieve desired network configuration. External network provider of vlan type appears to be required. In particular case, office networks 10.10.10.0/24 vlan tagged (157) ,10.10.50.0/24 vlan tagged (172) already exists when RDO install is running.
Complete text may bee seen at http://bderzhavets.blogspot.com/2016/05/rdo-mitaka-several-external-networks.html