Cannot delete external network

[Andrey Grebennikov]

Contrail 3.0.2 release With OpenStack Liberty

I'm creating network using Neutron CLI, specifying "router:external=True".
Creating a subnet in the new network.
Then I'm trying to delete subnet/network.

Expected result: network deleted
In fact: "Bad network request: Cannot Delete IP Block, Floating Pool(s) in use"
On the Contrail API side in the log:

192.168.100.73 - - [2016-07-05 23:34:31] "POST /neutron/subnet HTTP/1.1" 400 234 0.045637
127.0.0.1 - - [2016-07-05 23:36:44] "POST /useragent-kv HTTP/1.1" 200 172 0.004454
127.0.0.1 - - [2016-07-05 23:36:44] "GET /virtual-network/c2b7dfe3-ea64-4bc4-b8be-8669dd6ece85?exclude_back_refs=True&exclude_children=True HTTP/1.1" 200 1793 0.004251
127.0.0.1 - - [2016-07-05 23:36:45] "PUT /virtual-network/c2b7dfe3-ea64-4bc4-b8be-8669dd6ece85 HTTP/1.1" 409 169 0.014119
<pre>Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/vnc_openstack/neutron_plugin_interface.py", line 303, in plugin_delete_subnet
    cfgdb.subnet_delete(subnet['id'])
  File "/usr/lib/python2.7/dist-packages/vnc_openstack/neutron_plugin_db.py", line 2325, in wrapper
    return func(self, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/vnc_openstack/neutron_plugin_db.py", line 2752, in subnet_delete
    self._virtual_network_update(net_obj)
  File "/usr/lib/python2.7/dist-packages/vnc_openstack/neutron_plugin_db.py", line 309, in _virtual_network_update
    resource='network', msg=str(e))
  File "/usr/lib/python2.7/dist-packages/vnc_openstack/neutron_plugin_db.py", line 194, in _raise_contrail_exception
    bottle.abort(400, json.dumps(exc_info))
  File "/usr/lib/python2.7/dist-packages/bottle.py", line 2310, in abort
    raise HTTPError(code, text)
HTTPError
</pre>
192.168.100.73 - - [2016-07-05 23:36:45] "POST /neutron/subnet HTTP/1.1" 400 234 0.046371

[Denis Kostryukov (dkostryukov)]

I have the same issue, but my subnet belongs to private network.

# neutron subnet-delete dfffa880-e51d-448e-9d61-f26123456789
Bad network request: Cannot Delete IP Block, Floating Pool(s) in use

[ajeet vijayvergiya (ajeet17181)]

Looks like this issue got fixed in master branch

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/29853
Submitter: SHYAM BHOPLE (<email address hidden>)

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/29880
Submitter: SHYAM BHOPLE (<email address hidden>)

[Shyam Bhople (shyamb)]

This issue is observed on R3.0.2.x and not on later releases.

[OpenContrail Admin (ci-admin-f)]

Review in progress for https://review.opencontrail.org/30743
Submitter: manishkn (<email address hidden>)