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[Armando Migliaccio <1625818@xxxxxxxxxxxxxxxxxx>]

** Changed in: neutron
       Status: Confirmed => Fix Released

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Title:
  FWaaS v2 does not handle _interfaces not present in updated router
  gracefully

Status in neutron:
  Fix Released

Bug description:
  When updated router info comes in to firewall_l3_agent_v2.py without
  the _interfaces field set, the code does not gracefully detect this
  and skip the update.  This was picked up in tempest testing after the
  RC cutoff.  The fix for master is under review; the fix needs to be
  backported to stable/neutron.  Fix in master is:
  https://review.openstack.org/#/c/371611

  I found an example of an updated router that does not have _interfaces as an attribute at [1]:
  2016-09-15 19:37:08.356 21040 ERROR neutron_fwaas.services.firewall.agents.l3reference.firewall_l3_agent_v2 [req-b3e3ccbc-92ea-4c8e-8196-2987ecdd0195 - -] FWaaS router update RPC info call failed for {u'enable_snat': True, u'gw_port': {u'allowed_address_pairs': [], u'extra_dhcp_opts': [], u'updated_at': u'2016-09-15T19:36:31', u'device_owner': u'network:router_gateway', u'revision_number': 7, u'port_security_enabled': False, u'binding:profile': {}, u'binding:vnic_type': u'normal', u'fixed_ips': [{u'subnet_id': u'b27366c2-987c-4f6c-85a6-4fa329392ade', u'prefixlen': 24, u'ip_address': u'172.24.5.11'}, {u'subnet_id': u'71583438-8240-4bc1-a12f-3fc28087dff3', u'prefixlen': 64, u'ip_address': u'2001:db8::6'}], u'id': u'38a74555-f603-4287-9667-c13a7bcb8779', u'security_groups': [], u'binding:vif_details': {u'port_filter': True, u'ovs_hybrid_plug': True}, u'address_scopes': {u'4': None, u'6': None}, u'binding:vif_type': u'ovs', u'mac_address': u'fa:16:3e:5f:69:e7', u'project_id': u'', u'status': u'ACTIVE', u'subnets': [{u'dns_nameservers': [], u'ipv6_ra_mode': None, u'gateway_ip': u'2001:db8::2', u'cidr': u'2001:db8::/64', u'id': u'71583438-8240-4bc1-a12f-3fc28087dff3', u'subnetpool_id': None}, {u'dns_nameservers': [], u'ipv6_ra_mode': None, u'gateway_ip': u'172.24.5.1', u'cidr': u'172.24.5.0/24', u'id': u'b27366c2-987c-4f6c-85a6-4fa329392ade', u'subnetpool_id': None}], u'binding:host_id': u'ubuntu-trusty-rax-ord-4320605', u'description': u'', u'device_id': u'bcb45377-b7b2-4186-98dd-58e77a9b75e3', u'name': u'', u'admin_state_up': True, u'network_id': u'16004da0-37c9-4481-b769-0706b581d9e9', u'tenant_id': u'', u'created_at': u'2016-09-15T19:36:29', u'mtu': 1500, u'extra_subnets': []}, u'updated_at': u'2016-09-15T19:37:07', u'revision_number': 7, u'id': u'bcb45377-b7b2-4186-98dd-58e77a9b75e3', u'availability_zone_hints': [], u'availability_zones': [u'nova'], u'distributed': False, u'project_id': u'750d1d0452334b93815857b6b9bc9190', u'status': u'ACTIVE', u'ha_vr_id': 0, u'description': u'', u'ha': False, u'gw_port_host': u'ubuntu-trusty-rax-ord-4320605', u'external_gateway_info': {u'network_id': u'16004da0-37c9-4481-b769-0706b581d9e9', u'enable_snat': True, u'external_fixed_ips': [{u'subnet_id': u'b27366c2-987c-4f6c-85a6-4fa329392ade', u'ip_address': u'172.24.5.11'}, {u'subnet_id': u'71583438-8240-4bc1-a12f-3fc28087dff3', u'ip_address': u'2001:db8::6'}]}, u'name': u'tempest-router-smoke-1843134667', u'gw_port_id': u'38a74555-f603-4287-9667-c13a7bcb8779', u'admin_state_up': True, u'tenant_id': u'750d1d0452334b93815857b6b9bc9190', u'created_at': u'2016-09-15T19:36:28', u'flavor_id': None, u'routes': []}
  [1] http://logs.openstack.org/74/370274/11/check/gate-neutron-fwaas-dsvm-tempest/0768c92/logs/screen-q-l3.txt.gz#_2016-09-15_19_37_08_356

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