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[Ryan Moats <rmoats@xxxxxxxxxx>]

thanks, Paul, that's what my memory said, but it's good to verify it

** Changed in: neutron
       Status: New => Invalid

** Changed in: neutron
   Importance: Undecided => Wishlist

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https://bugs.launchpad.net/bugs/1579080

Title:
  VPNaaS crash during VPN Connection creation

Status in neutron:
  Invalid

Bug description:
  I've a Liberty Openstack environment with a L3HA (VRRP)on Centos 7;
  the library used for VPN is Libreswan 3.15.

  During VPNaaS creation between two tenant of the same Opnetstack, the
  creation process report an error in vpn_agent.log file:

    File "/usr/lib/python2.7/site-packages/neutron/agent/l3/agent.py", line 504, in _process_router_update
       self._process_router_if_compatible(router)
     File "/usr/lib/python2.7/site-packages/neutron/agent/l3/agent.py", line 443, in _process_router_if_compatible
       self._process_updated_router(router)
     File "/usr/lib/python2.7/site-packages/neutron/agent/l3/agent.py", line 457, in _process_updated_router
       ri.process(self)
     File "/usr/lib/python2.7/site-packages/neutron/agent/l3/ha_router.py", line 379, in process
       super(HaRouter, self).process(agent)
     File "/usr/lib/python2.7/site-packages/neutron/common/utils.py", line 359, in call
       self.logger(e)
     File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 195, in __exit__
       six.reraise(self.type_, self.value, self.tb)
     File "/usr/lib/python2.7/site-packages/neutron/common/utils.py", line 356, in call
       return func(*args, **kwargs)
     File "/usr/lib/python2.7/site-packages/neutron/agent/l3/router_info.py", line 691, in process
       self._process_internal_ports(agent.pd)
     File "/usr/lib/python2.7/site-packages/neutron/agent/l3/router_info.py", line 395, in _process_internal_ports
       self.internal_network_added(p)
     File "/usr/lib/python2.7/site-packages/neutron/agent/l3/ha_router.py", line 277, in internal_network_added
       self._disable_ipv6_addressing_on_interface(interface_name)
     File "/usr/lib/python2.7/site-packages/neutron/agent/l3/ha_router.py", line 237, in _disable_ipv6_addressing_on_interface
       if self._should_delete_ipv6_lladdr(ipv6_lladdr):
     File "/usr/lib/python2.7/site-packages/neutron/agent/l3/ha_router.py", line 219, in _should_delete_ipv6_lladdr
       if manager.get_process().active:
   AttributeError: 'NoneType' object has no attribute 'get_process'

  I've this type of error only during VPN creation between two openstack
  tenant, VPN between external devices (Cisco ASA) work properly.

  The neutron-vpnaas service continuosly send this log in vpn_agent.log
  file until the VPN is delated and neutron-vpn-agent service restarted.

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