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[OpenStack Infra <1572593@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.openstack.org/308389
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=fc66e7eb411eb8e99767c062ab8d0263738d5558
Submitter: Jenkins
Branch:    master

commit fc66e7eb411eb8e99767c062ab8d0263738d5558
Author: Timofey Durakov <tdurakov@xxxxxxxxxxxx>
Date:   Wed Apr 20 17:58:23 2016 +0300

    Clean port dns_name in case of port detach
    
    In case of port detach dns_name should be also
    updated in Neutron
    
    Change-Id: I65edb33b955a91d1701fc91cb9fae0a5f26d4e46
    Closes-Bug: #1572593


** Changed in: nova
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1572593

Title:
  Impossible attach detached port to another instance

Status in heat:
  Invalid
Status in neutron:
  Invalid
Status in OpenStack Compute (nova):
  Fix Released

Bug description:
  The follow scenario leads to error:
   - create independent port in neutron
   - boot VM in nova
   - attach port to VM via nova interface-attach. As result dns_name of port will be updated and port be attached to VM
   - detach port from VM via nova interface-detach. As result port will be detached, BUT dns_name will be still as name of VM.

  if you try to attach this port to another VM you will get error, that
  it's not possible to attach port.

  
  The same issue happens for Heat stack, when we have VM+port and execute update replace for Server.

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