Use one-subnet neutron port on dual stack network failed

[hongbin]

Create a neutron port with dual stack (ipv4 and ipv6) network, then remove the ipv6 address from the neutron port. Run a container with this port will fail

Steps to reproduce:

openstack network create testnet
openstack subnet create --network testnet --subnet-range 10.10.10.0/24 testsubnetv4
openstack subnet create --network testnet --ip-version 6 --subnet-range 2002:db8::/64 testsubnetv6
openstack port create --network testnet testport
openstack port unset --fixed-ip ip-address=2002:db8::4,subnet=579afbd4-3da4-4ef6-be34-9b1cd9baa645 testport
zun run --name testcontainer --net port=testport nginx
zun show testcontainer
+-------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Property | Value |
+-------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
... |
| status_reason | Docker internal error: 500 Server Error: Internal Server Error ("IpamDriver.RequestAddress: Requested ip address {'subnet_id': u'89f09a66-0cd0-4992-b122-ed2971072a16'} already belongs to a bound Neutron port: 0c252270-4ae4-4a4e-8e0b-cc12f7f66a35"). |
| name | testcontainer |
... |
+-------------------+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+

Kuryr's log:

Oct 28 18:04:36 octavia kuryr-server[23408]: 2018-10-28 18:04:36.363 23408 ERROR kuryr_libnetwork.utils [-] Unexpected error happened: Requested ip address {'subnet_id': u'89f09a66-0cd0-4992-b122-ed2971072a16'} already belongs to a bound Neutron port: 0c252270-4ae4-4a4e-8e0b-cc12f7f66a35: AddressInUseException: Requested ip address {'subnet_id': u'89f09a66-0cd0-4992-b122-ed2971072a16'} already belongs to a bound Neutron port: 0c252270-4ae4-4a4e-8e0b-cc12f7f66a35
Oct 28 18:04:36 octavia kuryr-server[23408]: Traceback (most recent call last):
Oct 28 18:04:36 octavia kuryr-server[23408]: File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1813, in full_dispatch_request
Oct 28 18:04:36 octavia kuryr-server[23408]: rv = self.dispatch_request()
Oct 28 18:04:36 octavia kuryr-server[23408]: File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1799, in dispatch_request
Oct 28 18:04:36 octavia kuryr-server[23408]: return self.view_functions[rule.endpoint](**req.view_args)
Oct 28 18:04:36 octavia kuryr-server[23408]: File "/opt/stack/kuryr-libnetwork/kuryr_libnetwork/controllers.py", line 1729, in ipam_request_address
Oct 28 18:04:36 octavia kuryr-server[23408]: existing_port, fixed_ip, req_mac_address)
Oct 28 18:04:36 octavia kuryr-server[23408]: File "/opt/stack/kuryr-libnetwork/kuryr_libnetwork/controllers.py", line 530, in _update_existing_port
Oct 28 18:04:36 octavia kuryr-server[23408]: existing_port['id']))
Oct 28 18:04:36 octavia kuryr-server[23408]: AddressInUseException: Requested ip address {'subnet_id': u'89f09a66-0cd0-4992-b122-ed2971072a16'} already belongs to a bound Neutron port: 0c252270-4ae4-4a4e-8e0b-cc12f7f66a35

[hongbin (hongbin034)]

Fixed by: https://review.openstack.org/#/c/613807/

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.openstack.org/633106

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/633106
Committed: https://git.openstack.org/cgit/openstack/zun-tempest-plugin/commit/?id=b2313233978525444baa7d8b7f3a7f9aa90f1182
Submitter: Zuul
Branch: master

commit b2313233978525444baa7d8b7f3a7f9aa90f1182
Author: Hongbin Lu <email address hidden>
Date: Fri Jan 25 03:23:03 2019 +0000

    Test create ipv4 port on dual net

    Change-Id: I65b3ad02c450eea3f714a1fd02d60c3f395d925f
    Related-Bug: #1800375