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[OpenStack Infra <1618674@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.openstack.org/364323
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=e5339b4a3d79693a09e19322ebc804b5e1c765ec
Submitter: Jenkins
Branch:    master

commit e5339b4a3d79693a09e19322ebc804b5e1c765ec
Author: Kevin Benton <kevin@xxxxxxxxxx>
Date:   Thu Sep 1 06:45:52 2016 -0700

    Ignore extra subnet IPs in DHCP agent
    
    When the DHCP agent requests a port from a server, it asks
    for fixed IPs from specific subnets. However, if the server
    is doing auto ipv6 addressing, it may give it an extra IP
    it never asked for. The previous logic was not expecting this
    so it would fail to correctly setup the DHCP port.
    
    This patch just ignores any IPs on subnets the DHCP agent
    isn't servicing.
    
    Closes-Bug: #1618674
    Change-Id: I1c26c85520258b751fa98eee326bc2acd2a16860


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

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https://bugs.launchpad.net/bugs/1618674

Title:
  dhcp agent throwing KeyError setting-up port

Status in neutron:
  Fix Released

Bug description:
  Found this KeyError in the dhcp-agent log file from a tempest test:

  http://logs.openstack.org/14/356714/4/check/gate-tempest-dsvm-neutron-
  dvr-multinode-
  full/cbdf339/logs/screen-q-dhcp.txt.gz#_2016-08-30_22_07_04_149

  ERROR neutron.agent.dhcp.agent [req-4e94ba84-1ed6-43d8-acbc-20089babac6d tempest-NetworksTestDHCPv6-620333947 -] Unable to enable dhcp for f08de6cf-0815-456c-84bd-1ceff273c018.
  ERROR neutron.agent.dhcp.agent Traceback (most recent call last):
  ERROR neutron.agent.dhcp.agent   File "/opt/stack/new/neutron/neutron/agent/dhcp/agent.py", line 115, in call_driver
  ERROR neutron.agent.dhcp.agent     getattr(driver, action)(**action_kwargs)
  ERROR neutron.agent.dhcp.agent   File "/opt/stack/new/neutron/neutron/agent/linux/dhcp.py", line 211, in enable
  ERROR neutron.agent.dhcp.agent     interface_name = self.device_manager.setup(self.network)
  ERROR neutron.agent.dhcp.agent   File "/opt/stack/new/neutron/neutron/agent/linux/dhcp.py", line 1220, in setup
  ERROR neutron.agent.dhcp.agent     port = self.setup_dhcp_port(network)
  ERROR neutron.agent.dhcp.agent   File "/opt/stack/new/neutron/neutron/agent/linux/dhcp.py", line 1192, in setup_dhcp_port
  ERROR neutron.agent.dhcp.agent     for fixed_ip in dhcp_port.fixed_ips]
  ERROR neutron.agent.dhcp.agent KeyError: u'adb32792-59e1-48a9-a4ea-9d3181e80ea4'

  I think the test is test_dhcpv6_64_subnets(), but it's definitely in
  the class.

  logstash found a lot of these, so it's happening pretty frequently.

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