[Openstack-operators] [neutron][ovs]Leaking flow?

Jonathan D. Proulx jon at csail.mit.edu
Wed Feb 21 17:22:06 UTC 2018


Hi All,

Running Mitaka on Ubuntu 16.04 so perhaps this is an ancient bug,
but...

I have a project with it's own vlan-provider network that spans their
legacy physical hosts and cloud systems (probably not relevant but it
is weird).

They noticed on of their VMs could over hear one unicast flow between
two other VMs on this network.

Looking a bit deeper they had 7 VMs on this particular hypervisor. One
is a participant in the flow in question, but all could see that flow.

The "source" system is  high traffic with a lot of flows but this one
and only this one seems to be "leaky".

any pointers to what maybe going on here?

Thanks,
-Jon



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