[Bug 1751396] Re: DVR: Inter Tenant Traffic between two networks and connected through a shared network not reachable with DVR routers

[Launchpad Bug Tracker]

This bug was fixed in the package neutron - 2:12.0.1-0ubuntu1

---------------
neutron (2:12.0.1-0ubuntu1) bionic; urgency=medium

  * d/p/dvr-inter-tenant-traffic.patch: Cherry-picked from upstream
    stable/queens branch (LP: #1751396).
  * New stable point release for OpenStack Queens (LP: #1765138).

 -- Corey Bryant <corey.bryant at canonical.com>  Wed, 18 Apr 2018 12:07:48
-0400

** Changed in: neutron (Ubuntu Bionic)
       Status: Triaged => Fix Released

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https://bugs.launchpad.net/bugs/1751396

Title:
  DVR: Inter Tenant Traffic between two networks and connected through a
  shared network not reachable with DVR routers

Status in Ubuntu Cloud Archive:
  Triaged
Status in Ubuntu Cloud Archive pike series:
  Triaged
Status in Ubuntu Cloud Archive queens series:
  Triaged
Status in neutron:
  Fix Released
Status in neutron package in Ubuntu:
  Fix Released
Status in neutron source package in Artful:
  Triaged
Status in neutron source package in Bionic:
  Fix Released

Bug description:
  Inter Tenant Traffic between Two Tenants on two different private
  networks connected through a common shared network (created by Admin)
  is not route able through DVR routers

  Steps to reproduce it:

  (NOTE: No external, just shared network)
  This is only reproducable in Multinode scenario. ( 1 Controller - 2 compute ).
  Make sure that the two VMs are isolated in two different computes.

  openstack network create --share shared_net

  openstack subnet create shared_net_sn --network shared_net --subnet-
  range 172.168.10.0/24

  
  openstack network create net_A
  openstack subnet create net_A_sn --network net_A --subnet-range 10.1.0.0/24

  
  openstack network create net_B
  openstack subnet create net_B_sn --network net_B --subnet-range 10.2.0.0/24

  
  openstack router create router_A

  openstack port create --network=shared_net --fixed-ip subnet=shared_net_sn,ip-address=172.168.10.20 port_router_A_shared_net
  openstack router add port router_A port_router_A_shared_net
  openstack router add subnet router_A net_A_sn

  openstack router create router_B
  openstack port create --network=shared_net --fixed-ip subnet=shared_net_sn,ip-address=172.168.10.30 port_router_B_shared_net
  openstack router add port router_B port_router_B_shared_net
  openstack router add subnet router_B net_B_sn

  openstack server create server_A --flavor m1.tiny --image cirros --nic net-id=net_A
  openstack server create server_B --flavor m1.tiny --image cirros --nic net-id=net_B
    
  Add static routes to the router.
  openstack router set router_A --route destination=10.1.0.0/24,gateway=172.168.10.20
  openstack router set router_B --route destination=10.2.0.0/24,gateway=172.168.10.30
  ```

  Ping from one instance to the other times out

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