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[Launchpad Bug Tracker <1507489@xxxxxxxxxxxxxxxxxx>]

[Expired for neutron because there has been no activity for 60 days.]

** Changed in: neutron
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1507489

Title:
  manually reschedule dhcp-agent doesn't update port binding

Status in neutron:
  Expired

Bug description:
  We can use dhcp-agent-network-add/remove to manually reschedule a net between dhcp-agents. And "neutron dhcp-agent-list-hosting-net" and ip or ps commands can be used to confirm network is rescheduled to new agent.
  But dhcp port binding doesn't get updated in db site, we can use "neutron port-show" to find that, after network is rescheduled.

  Pre-conditions:
  2 active dhcp-agents, agent-A and agent-B;
  network net-1 is bound on agent-A, use "neutron dhcp-agent-list-hosting-net" can to verify this;
  port-1 is dhcp port of net-1;
  set dhcp_agents_per_network = 1 in /etc/neutron/neutron.conf;

  steps:
  neutron dhcp-agent-network-remove AGENT-A-ID NET-1-ID ; neutron port-show PORT-1-ID
  [1]
  neutron dhcp-agent-network-add AGENT-B-ID NET-1-ID ; neutron port-show PORT-1-ID
  [2]

  expected:
  [1]:
  Field                      Value
  binding:host_id      EMPTY
  binding:profile       {}
  binding:vif_details  {}
  binding:vif_type     unbound
  binding:vnic_type   normal
  device_id               reserved_dhcp_port
  ....

  [2]:
  Field                      Value
  binding:host_id      AGENT-B-HOST-ID
  binding:profile       {}
  binding:vif_details  {"port_filter": true, "ovs_hybrid_plug": true}
  binding:vif_type     ovs
  binding:vnic_type   normal
  device_id               dhcpxxx(relate-to-agent-B-host)-NET-1-ID

  Actual output:
  [1]
  Field                      Value
  binding:host_id      AGENT-A-HOST-ID
  binding:profile       {}
  binding:vif_details  {"port_filter": true, "ovs_hybrid_plug": true}
  binding:vif_type     ovs
  binding:vnic_type   normal
  device_id               dhcpxxx(relate-to-agent-A-host)-NET-1-ID
  [2]

  Field                      Value
  binding:host_id      AGENT-A-HOST-ID
  binding:profile       {}
  binding:vif_details  {"port_filter": true, "ovs_hybrid_plug": true}
  binding:vif_type     ovs
  binding:vnic_type   normal
  device_id               dhcpxxx(relate-to-agent-A-host)-NET-1-ID

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