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[Pavel Bondar <pbondar@xxxxxxxxxxxx>]

Public bug reported:

ML2 plugin redefines [1] delete_subnet from db_base_plugin_v2,
but it does call to delete_subnet from pluggable IPAM implementation.

Subnets are correctly deleted from Horizon UI, but call to third-party IPAM provider is not done,
so subnets persist on IPAM provider.

[1]
https://github.com/openstack/neutron/blob/master/neutron/plugins/ml2/plugin.py#L880

** Affects: neutron
     Importance: Undecided
     Assignee: Pavel Bondar (pasha117)
         Status: New


** Tags: l3-ipam-dhcp

** Changed in: neutron
     Assignee: (unassigned) => Pavel Bondar (pasha117)

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https://bugs.launchpad.net/bugs/1510653

Title:
  delete_subnet is not called in IPAM driver on subnet deallocation if
  ML2 plugin is used

Status in neutron:
  New

Bug description:
  ML2 plugin redefines [1] delete_subnet from db_base_plugin_v2,
  but it does call to delete_subnet from pluggable IPAM implementation.

  Subnets are correctly deleted from Horizon UI, but call to third-party IPAM provider is not done,
  so subnets persist on IPAM provider.

  [1]
  https://github.com/openstack/neutron/blob/master/neutron/plugins/ml2/plugin.py#L880

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