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[Saeed Padari <2091211@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Hi
I am using Open vSwitch/ML2 for neutron and creating a flat network as the provider.
I have created two instances on the same compute node with the flat network. When using tcpdump on one instance, I can watch the unicast traffic of another instance, and it is so weird!!!

Port security is enabled, and the security group is also configured.
Even if I remove all security groups and use tcpdump from the instance's
console, I can watch other unicast traffic.

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/2091211

Title:
  network leakage for flat network

Status in neutron:
  New

Bug description:
  Hi
  I am using Open vSwitch/ML2 for neutron and creating a flat network as the provider.
  I have created two instances on the same compute node with the flat network. When using tcpdump on one instance, I can watch the unicast traffic of another instance, and it is so weird!!!

  Port security is enabled, and the security group is also configured.
  Even if I remove all security groups and use tcpdump from the
  instance's console, I can watch other unicast traffic.

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