Hi Marvin, The interface related configuration pasted in this comment. I am using STX R2 milestone3 ISO image for this testing. Per the related code (sysinv/puppet/interface.py), it seems that the bridge will be created if the interface is data ethernet and not dpdk compatible. 672 bridge = None 673 if (iface['iftype'] == constants.INTERFACE_TYPE_ETHERNET and 674 is_data_interface(context, iface) and 675 not is_dpdk_compatible(context, iface)): 676 bridge = 'br-' + get_interface_os_ifname(context, iface) 677 iface['_bridge'] = bridge # cache the result [root@controller-0 ~(keystone_admin)]# system host-port-list controller-0 +--------------------------------------+--------+----------+--------------+--------+-----------+-------------+-----------------------------------------+ | uuid | name | type | pci address | device | processor | accelerated | device type | +--------------------------------------+--------+----------+--------------+--------+-----------+-------------+-----------------------------------------+ | 1716a76f-cf19-46eb-bdde-6564357ac385 | eno1 | ethernet | 0000:03:00.0 | 0 | 0 | False | NetXtreme BCM5719 Gigabit Ethernet PCIe | | 44b2628a-2280-47c3-b437-ccaf37257233 | eno2 | ethernet | 0000:03:00.1 | 0 | 0 | False | NetXtreme BCM5719 Gigabit Ethernet PCIe | | 907fb9c0-b930-4f91-8753-de3022ef1368 | eno3 | ethernet | 0000:03:00.2 | 0 | 0 | False | NetXtreme BCM5719 Gigabit Ethernet PCIe | | bc002f2f-f606-4f4e-acac-ef25432e20d6 | eno4 | ethernet | 0000:03:00.3 | 0 | 0 | False | NetXtreme BCM5719 Gigabit Ethernet PCIe | | e83801d1-96a5-4fdd-9a90-4933213c77ed | ens1f0 | ethernet | 0000:04:00.0 | 0 | 0 | True | 82599ES 10-Gigabit SFI/SFP+ Network | | | | | | | | | Connection | | | | | | | | | | | 29e6496f-dd93-4d77-8554-06154ac7ebe1 | ens1f1 | ethernet | 0000:04:00.1 | 0 | 0 | True | 82599ES 10-Gigabit SFI/SFP+ Network | | | | | | | | | Connection | | | | | | | | | | +--------------------------------------+--------+----------+--------------+--------+-----------+-------------+-----------------------------------------+ [root@controller-0 ~(keystone_admin)]# system host-port-show controller-0 eno4 +-----------------------+-----------------------------------------+ | Property | Value | +-----------------------+-----------------------------------------+ | name | eno4 | | namedisplay | None | | type | ethernet | | pciaddr | 0000:03:00.3 | | dev_id | 0 | | processor | 0 | | sriov_totalvfs | None | | sriov_numvfs | 0 | | sriov_vfs_pci_address | | | sriov_vf_driver | None | | driver | tg3 | | pclass | Ethernet controller | | pvendor | Broadcom Inc. and subsidiaries | | pdevice | NetXtreme BCM5719 Gigabit Ethernet PCIe | | capabilities | {} | | uuid | bc002f2f-f606-4f4e-acac-ef25432e20d6 | | host_uuid | 5b863404-eee7-468d-b0cc-56bdfc45f4ea | | interface_uuid | 4507463c-3c71-44be-9d57-0bae63d38b5e | | accelerated | False | | created_at | 2019-06-25T07:29:29.956130+00:00 | | updated_at | 2019-06-25T07:29:30.800482+00:00 | +-----------------------+-----------------------------------------+ [root@controller-0 ~(keystone_admin)]# system host-if-list controller-0 +--------------------------------------+-------+----------+----------+------+-------------+------+------+-------------------------+---------------+ | uuid | name | class | type | vlan | ports | uses | used | attributes | data networks | | | | | | id | | i/f | by | | | | | | | | | | | i/f | | | +--------------------------------------+-------+----------+----------+------+-------------+------+------+-------------------------+---------------+ | 2783d422-10bb-4ccf-bd80-7fa2d84ed7cc | eno1 | platform | ethernet | None | [u'eno1'] | [] | [] | MTU=1500 | [] | | 4507463c-3c71-44be-9d57-0bae63d38b5e | data0 | data | ethernet | None | [u'eno4'] | [] | [] | MTU=1500,accelerated= | [u'physnet0'] | | | | | | | | | | False | | | | | | | | | | | | | | b07fcce7-3e9a-4cb5-bc58-8a285a54869f | lo | platform | virtual | None | [] | [] | [] | MTU=1500 | [] | | d45e77dc-7727-4b17-9060-d6bcf1a30c4a | data1 | data | ethernet | None | [u'ens1f0'] | [] | [] | MTU=1500,accelerated= | [u'physnet1'] | | | | | | | | | | True | | | | | | | | | | | | | +--------------------------------------+-------+----------+----------+------+-------------+------+------+-------------------------+---------------+ [root@controller-0 ~(keystone_admin)]# system host-if-show controller-0 data0 +-----------------+--------------------------------------+ | Property | Value | +-----------------+--------------------------------------+ | ifname | data0 | | iftype | ethernet | | ports | [u'eno4'] | | datanetworks | [u'physnet0'] | | imac | ac:16:2d:72:cd:3f | | imtu | 1500 | | ifclass | data | | aemode | None | | schedpolicy | None | | txhashpolicy | None | | uuid | 4507463c-3c71-44be-9d57-0bae63d38b5e | | ihost_uuid | 5b863404-eee7-468d-b0cc-56bdfc45f4ea | | vlan_id | None | | uses | [] | | used_by | [] | | created_at | | | updated_at | | | sriov_numvfs | 0 | | sriov_vf_driver | None | | ipv4_mode | disabled | | ipv6_mode | disabled | | accelerated | [False] | +-----------------+--------------------------------------+ [root@controller-0 ~(keystone_admin)]# system datanetwork-list +--------------------------------------+----------+--------------+------+ | uuid | name | network_type | mtu | +--------------------------------------+----------+--------------+------+ | 1f42b27c-dbc9-42ea-8756-d07e449c3fda | physnet0 | flat | 1500 | | 0033c750-7f1d-403c-b9b4-08286fc8e086 | physnet1 | vlan | 1500 | +--------------------------------------+----------+--------------+------+