Public bug reported:

The HA _update_router_port_bindings call calls update_port on a port and
has some exception handling code to deal with concurrent deletes of the
port. However, this code doesn't catch PortNotFound, which is raised if
the port is completely deleted before update_port has a chance to even
do a get_port. The other exceptions occur when update_port makes it
beyond get_port and the port is deleted.

** Affects: neutron
     Importance: Undecided
     Assignee: Kevin Benton (kevinbenton)
         Status: In Progress

** Changed in: neutron
     Assignee: (unassigned) => Kevin Benton (kevinbenton)

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https://bugs.launchpad.net/bugs/1549977

Title:
  _update_router_port_bindings missing exception

Status in neutron:
  In Progress

Bug description:
  The HA _update_router_port_bindings call calls update_port on a port
  and has some exception handling code to deal with concurrent deletes
  of the port. However, this code doesn't catch PortNotFound, which is
  raised if the port is completely deleted before update_port has a
  chance to even do a get_port. The other exceptions occur when
  update_port makes it beyond get_port and the port is deleted.

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