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[Isaku Yamahata <1648095@xxxxxxxxxxxxxxxxxx>]

** Also affects: neutron
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1648095

Title:
  neutron-ns-metadata-proxy cleanup does not occur

Status in networking-odl:
  In Progress
Status in neutron:
  In Progress

Bug description:
  Devstack + newton + networking-odl / v2.
  To reproduce:
  1. Create a new vxlan network.
  2. Add 1 or more subnets
  3. Delete the network.
  I notice this occur during tempest.api.network.test_networks.NetworksIpV6Test.test_create_list_subnet_with_no_gw64_one_network

  Finally linux is Out of memory and terminating processes based on
  score.

  Many like this;
  stack     2538     1  0 11:19 ?        00:00:00 /usr/bin/python /usr/local/bin/neutron-ns-metadata-proxy --pid_file=/opt/stack/data/neutron/external/pids/b408d77c-ca69-4b2c-b2f1-5a889f149f11.pid --metadata_proxy_socket=/opt/stack/data/neutron/metadata_proxy --network_id=b408d77c-ca69-4b2c-b2f1-5a889f149f11 --state_path=/opt/stack/data/neutron --metadata_port=80 --metadata_proxy_user=1000 --metadata_proxy_group=1000 --debug
  stack     2981     1  0 11:20 ?        00:00:00 /usr/bin/python /usr/local/bin/neutron-ns-metadata-proxy --pid_file=/opt/stack/data/neutron/external/pids/ddfc2980-2c16-46f4-8eab-e91a047e796c.pid --metadata_proxy_socket=/opt/stack/data/neutron/metadata_proxy --network_id=ddfc2980-2c16-46f4-8eab-e91a047e796c --state_path=/opt/stack/data/neutron --metadata_port=80 --metadata_proxy_user=1000 --metadata_proxy_group=1000 --debug
  stack     4977     1  0 11:28 ?        00:00:00 /usr/bin/python /usr/local/bin/neutron-ns-metadata-proxy --pid_file=/opt/stack/data/neutron/external/pids/2b6d0fe6-f13a-4be4-9ea6-f6bc12ed3d69.pid --metadata_proxy_socket=/opt/stack/data/neutron/metadata_proxy --network_id=2b6d0fe6-f13a-4be4-9ea6-f6bc12ed3d69 --state_path=/opt/stack/data/neutron --metadata_port=80 --metadata_proxy_user=1000 --metadata_proxy_group=1000 --debug
  stack     6199 12085  0 11:34 pts/6    00:00:00 grep neutron-ns-metadata-proxy
  stack    29462     1  0 11:11 ?        00:00:00 /usr/bin/python /usr/local/bin/neutron-ns-metadata-proxy --pid_file=/opt/stack/data/neutron/external/pids/00192768-29d1-46d2-9092-7a7bbd7b55ef.pid --metadata_proxy_socket=/opt/stack/data/neutron/metadata_proxy --network_id=00192768-29d1-46d2-9092-7a7bbd7b55ef --state_path=/opt/stack/data/neutron --metadata_port=80 --metadata_proxy_user=1000 --metadata_proxy_group=1000 --debug
  stack    32627     1  0 11:17 ?        00:00:00 /usr/bin/python /usr/local/bin/neutron-ns-metadata-proxy --pid_file=/opt/stack/data/neutron/external/pids/b2aa9b47-b55e-4b3f-bf2c-31bc91d86b33.pid --metadata_proxy_socket=/opt/stack/data/neutron/metadata_proxy --network_id=b2aa9b47-b55e-4b3f-bf2c-31bc91d86b33 --state_path=/opt/stack/data/neutron --metadata_port=80 --metadata_proxy_user=1000 --metadata_proxy_group=1000 --debug

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