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[Thierry Carrez <thierry.carrez+lp@xxxxxxxxx>]

** Changed in: neutron
       Status: Fix Committed => Fix Released

** Changed in: neutron
    Milestone: None => kilo-2

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https://bugs.launchpad.net/bugs/1316444

Title:
  IPs from dhcp disabled subnets are added to host file when multiple
  subnets

Status in OpenStack Neutron (virtual network service):
  Fix Released

Bug description:
  If a network has many subnets, and some have dhcp enabled and some
  don't, then ips from all subnets are added to the dnsmasq host file.

  Step:
  $ neutron net-create net44
  $ neutron subnet-create net44 10.0.10.0/24 --name sub1 --enable_dhcp true
  $ neutron subnet-create net44 10.0.20.0/24 --name sub2 --enable_dhcp false

  $ neutron subnet-list --fields id --fields name
  +--------------------------------------+----------------+
  | id                                   | name           |
  +--------------------------------------+----------------+
  | 4e32d76e-4c3a-458c-a250-69856ac325c2 | sub1           |
  | c5f0d5a4-227b-4f60-914f-88c6f1b03525 | sub2           |
  | e2de152d-a6dc-431e-8ca4-758601161f84 | private-subnet |
  +--------------------------------------+----------------+

  $ neutron port-create net44 \
      --fixed-ip subnet_id=4e32d76e-4c3a-458c-a250-69856ac325c2 \
       --fixed-ip subnet_id=c5f0d5a4-227b-4f60-914f-88c6f1b03525 
  +-----------------------+----------------------------------------------------------------------------------+
  | Field                 | Value                                                                            |
  +-----------------------+----------------------------------------------------------------------------------+
  | admin_state_up        | True                                                                             |
  | allowed_address_pairs |                                                                                  |
  | binding:vnic_type     | normal                                                                           |
  | device_id             |                                                                                  |
  | device_owner          |                                                                                  |
  | extra_dhcp_opts       |                                                                                  |
  | fixed_ips             | {"subnet_id": "4e32d76e-4c3a-458c-a250-69856ac325c2", "ip_address": "10.0.10.2"} |
  |                       | {"subnet_id": "c5f0d5a4-227b-4f60-914f-88c6f1b03525", "ip_address": "10.0.20.2"} |
  | id                    | 86b2b51b-a0e3-4f74-bb7d-e76eab90c9ed                                             |
  | mac_address           | fa:16:3e:c7:15:82                                                                |
  | name                  |                                                                                  |
  | network_id            | fab1f41e-d9a4-4ca9-bce3-bb5321822958                                             |
  | security_groups       | b572b0b9-2fe3-4651-a903-f0dfbaf1c433                                             |
  | status                | DOWN                                                                             |
  | tenant_id             | 15a0f58023434a78a13bf44e277580ef                                                 |
  +-----------------------+----------------------------------------------------------------------------------+

  
  vagrant@devstack:~$ cat /opt/stack/data/neutron/dhcp/fab1f41e-d9a4-4ca9-bce3-bb5321822958/host 
  fa:16:3e:c7:15:82,host-10-0-10-2.openstacklocal,10.0.10.2
  fa:16:3e:c7:15:82,host-10-0-20-2.openstacklocal,10.0.20.2

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