i have my availability_zone is missing, i have check my config in all related file is none wrong, this output:

root@controller:/home/openstack# neutron agent-list
    +--------------------------------------+--------------------+------------+-------------------+-------+----------------+---------------------------+
| id                                   | agent_type         | host       | availability_zone | alive | admin_state_up | binary                    |
+--------------------------------------+--------------------+------------+-------------------+-------+----------------+---------------------------+
| 0b0b7ede-97d4-4105-bae1-2c40372c145e | DHCP agent         | controller | nova              | :-)   | True           | neutron-dhcp-agent        |
| 34e90591-79fe-40f7-ab3f-d5c5c6446dde | Metadata agent     | controller |                   | :-)   | True           | neutron-metadata-agent    |
| 4357dac6-28a8-4cde-97e2-8f8f298db6ba | L3 agent           | controller | nova              | :-)   | True           | neutron-l3-agent          |
| 49d4968e-5bbf-4ce7-8f63-28389f75e400 | Linux bridge agent | controller |                   | :-)   | True           | neutron-linuxbridge-agent |
| f5f28fa8-0859-4f0d-b0d6-eb4047041d87 | Linux bridge agent | compute1   |                   | :-)   | True           | neutron-linuxbridge-agent |
+--------------------------------------+--------------------+------------+-------------------+-------+----------------+---------------------------+

and my neutron-dhcp-agent.log shows:

2017-10-10 12:39:32.775 2338 INFO neutron.agent.dhcp.agent [-] Starting network 6c5cf12b-0b7c-42d2-97d9-b8eb4af76530 dhcp configuration
2017-10-10 12:39:32.776 2338 WARNING stevedore.named [-] Could not load neutron.agent.linux.interface.BridgeInterfaceDriver
2017-10-10 12:39:32.786 2338 INFO neutron.agent.dhcp.agent [-] Starting network c246ee06-6f49-4852-aec4-01f6aa176318 dhcp configuration
2017-10-10 12:39:32.787 2338 WARNING stevedore.named [-] Could not load neutron.agent.linux.interface.BridgeInterfaceDriver

is anyone know whats going on in my openstack (newton). my instance can't get ip of provider network. is there any solutions?