Exception: Error in creating instance: Duplicate networks are not allowed

[caglar10ur]

observer throws following

INFO:xos.log:Step <class 'sync_controller_slice_privileges.SyncControllerSlicePrivileges'> succeeded
Step <class 'sync_controller_slice_privileges.SyncControllerSlicePrivileges'> succeeded
INFO:xos.log:Step <class 'sync_controller_slice_privileges.SyncControllerSlicePrivileges'> is a leaf
INFO:xos.log:sync'ing sliver:uninstantiated-1 slice:mysite_myslice controller:MyController OpenStack Juno

PLAY [127.0.0.1] **************************************************************

GATHERING FACTS ***************************************************************
ok: [127.0.0.1]

TASK: [nova_keypair ] *********************************************************
ok: [127.0.0.1] => {"changed": false, "result": "Key present"}

TASK: [nova_compute ] *********************************************************
failed: [127.0.0.1] => {"failed": true}
msg: Error in creating instance: Duplicate networks (8fe6b8b3-e04c-4ab6-9fea-5eaa28a7a21f) are not allowed

FATAL: all hosts have already failed -- aborting

PLAY RECAP ********************************************************************
           to retry, use: --limit @/root/mysite_myslice-1.retry

127.0.0.1                  : ok=2    changed=0    unreachable=0    failed=1


ERROR:xos.log:sync step failed! BEG TRACEBACK
Traceback (most recent call last):
  File "/opt/xos/observer/syncstep.py", line 123, in call
    self.sync_record(o)
  File "/opt/xos/observer/steps/sync_slivers.py", line 125, in sync_record
    res = run_template('sync_slivers.yaml', tenant_fields,path='slivers', expected_num=2)
  File "/opt/xos/observer/ansible.py", line 89, in run_template
    raise Exception(error)
Exception: Error in creating instance: Duplicate net

and ansible playbook shows

root@cb70ab09e317:/opt/opencloud# cat /opt/opencloud/slivers/mysite_myslice-1

---
- hosts: 127.0.0.1
  connection: local
  tasks:

  - nova_keypair:
      state: present
      auth_url: http://172.25.148.240:5000/v2.0/
      login_username: padmin@vicci.org
      login_password: PASSWORD
      login_tenant_name: mysite_myslice
      name: padminATvicciorgmysite_myslice
      public_key: "ssh-rsa SSH_KEY"

  - nova_compute:
      auth_url: http://172.25.148.240:5000/v2.0/
      login_username: padmin@vicci.org
      login_password: PASSWORD
      login_tenant_name: mysite_myslice
      name: mysite_myslice-1

      state: present
      availability_zone: nova:a-rdo5.lcdn.corp.akalab.com
      image_id: 1c963e8d-aee7-4cad-b467-7d8c47bc9bcc
      key_name: padminATvicciorgmysite_myslice
      wait_for: 200
      flavor_id: 3
      user_data: "opencloud:\n   slicename: \"mysite_myslice\"\n   hostname: \"a-rdo5.lcdn.corp.akalab.com\"\n"
      nics:

          - net-id: 8fe6b8b3-e04c-4ab6-9fea-5eaa28a7a21f

          - net-id: 8fe6b8b3-e04c-4ab6-9fea-5eaa28a7a21f