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[Launchpad Bug Tracker <1882860@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/1882860

Title:
  after FIP is assigned vm lost network connection

Status in neutron:
  Expired

Bug description:
  Description
  ===========
  There are private (internal) and public (external for FIP) networks in OpenStack project, also there is router with gateway and external net and interface as internal net. After server is created without FIP and only internal net, it has Internet access. After FIP is assigned the vm looses its connection. 

  Steps to reproduce 
  ==================
   
  1. Create network_0:
    name: internal
    external: false
    provider_network_type: geneve
    provider_segmentation_id: 5555
    create_subnet: true 
    cidr: 192.168.33.0/24
    no_gateway_ip: false
    allocation_pool_start: 192.168.33.5
    allocation_pool_end: 192.168.33.250
    enable_dhcp: true

  2. Create network_1:
    name: external
    external: true
    provider_network_type: vlan
    provider_physical_network: datacentre
    provider_segmentation_id: 450
    create_subnet: true
    cidr: 10.100.148.0/22
    gateway_ip: 10.100.151.254
    allocation_pool_start: 10.100.149.5
    allocation_pool_end: 10.100.149.250 
    enable_dhcp: false

  3. Create router:
    name: router_1
    interfaces: [internal_subnet]
    network: external

  4. Create server:
    flavor with ram: 1Gb, disk: 10Gb, vcpus: 1
    image: cirros-0.4.0-x86_64
    name: testing_config
    network: internal

  5. Open virtual console using Horizon and log in, ping 8.8.8.8. It
  executes successfully

  6. Create Create floating_ip:
    network: external
    server: testing_config

  7. SSH virtual machine by assigned floating ip.

  8. Ping 8.8.8.8. The command stucks

  Expected result
  ===============
  Successful ping on Step 8

  Actual result
  =============
  Ping on Step 8 stucks

  Environment
  ===========
  I have deployed OpenStack Ussuri with 3 controllers and 2 computes with Pacemaker and PacemakerRemote. 
  OpenStack is containerized using Podman and all the containers are from tripleomaster and have tag 0b5ec707ab4c049281536e2bfbb1984c.

  Neutron configuration: 
  [DEFAULT]
  debug=False
  log_dir=/var/log/neutron
  control_exchange=neutron
  bind_host=172.16.2.74
  auth_strategy=keystone
  core_plugin=ml2
  host=overcloud-controller-0.localdomain
  dns_domain=openstacklocal
  dhcp_agents_per_network=3
  dhcp_agent_notification=True
  allow_overlapping_ips=True
  global_physnet_mtu=1500
  vlan_transparent=False
  service_plugins=qos,ovn-router,trunk,segments
  notify_nova_on_port_status_changes=True
  notify_nova_on_port_data_changes=True
  l3_ha=False
  max_l3_agents_per_router=3
  api_workers=12
  rpc_workers=12
  router_scheduler_driver=neutron.scheduler.l3_agent_scheduler.ChanceScheduler
  allow_automatic_l3agent_failover=True
  [database]
  connection=mysql+pymysql://neutron:***************@172.16.2.100/ovs_neutron?read_default_file=/etc/my.cnf.d/tripleo.cnf&read_default_group=tripleo
  max_retries=-1
  db_max_retries=-1
  [keystone_authtoken]
  www_authenticate_uri=http://172.16.2.100:5000
  region_name=regionOne
  memcached_servers=172.16.2.74:11211,172.16.2.54:11211,172.16.2.97:11211
  auth_type=password
  auth_url=http://172.16.2.100:5000
  username=neutron
  password=***********************
  user_domain_name=Default
  project_name=service
  project_domain_name=Default
  [oslo_concurrency]
  lock_path=$state_path/lock
  [oslo_messaging_notifications]
  driver=noop
  [oslo_messaging_rabbit]
  heartbeat_timeout_threshold=60
  [oslo_middleware]
  enable_proxy_headers_parsing=True
  [oslo_policy]
  policy_file=/etc/neutron/policy.json
  [agent]
  root_helper=sudo neutron-rootwrap /etc/neutron/rootwrap.conf
  [nova]
  auth_url=http://172.16.2.100:5000
  username=nova
  password=************
  project_domain_name=Default
  project_name=service
  user_domain_name=Default
  region_name=regionOne
  endpoint_type=internal
  auth_type=password
  [placement]
  auth_url=http://172.16.2.100:5000
  username=nova
  password=***************
  project_domain_name=Default
  project_name=service
  user_domain_name=Default
  region_name=regionOne
  auth_type=password
  [ovs]
  igmp_snooping_enable=False
  [quotas]
  quota_port=500
  quota_security_group=10
  quota_firewall_rule=-1
  quota_network_gateway=5
  quota_packet_filter=100

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