IPv6 namespaces are not updated upon router interface deletion

[Nir Magnezi]

Description of problem:
=======================
In case the namespace contains both IPv4 and IPv6 Interfaces, they will not be deleted with interfaces are detached from the router.

Version-Release number of selected component (if applicable):
=============================================================
openstack-neutron-2014.2-0.7.b3

How reproducible:
=================

Steps to Reproduce:
===================
1. Create a neutron Router
2. Attach an IPv6 interface
3. Attach an IPv4 interface
4. Delete both interfaces
5. Check if interfaces were deleted from the router namespace:
   # ip netns exec qrouter-<id> ifconfig | grep inet

Actual results:
===============
Interfaces were not deleted.

Expected results:
=================
Interfaces should be deleted.

Additional info:
================
Tested with RHEL7

[Kannan Raman (rkannan-x)]

Hi Nir Magnezi ,

Based in investigation this not an actual bug.
There is a sequence For deleting an interface (PORTS) from ROUTER.

Let me explain the SEQUENCE OF DELETING AN INTERFACE FROM ROUTER:

Step 1:

Delete properly if DHCP agent present in your opnenstack neutron

Step 2:

Delete properly PORTS for device attached with openstack neutron

       1. DHCP
       2. COMPUTE:NOVA
       3: network:router_interface

Step 3:

Delete properly sub net attached with openstack neutron

Step 4:

Finally delete properly networks attached with openstack neutron

If you have any clarification let me know

[Nandini (nandini-tata)]

Could not reproduce the bug.