[ovs-dev] OVS/OVN: Interface with NAT

Guru Shetty guru at ovn.org
Tue Jan 5 17:57:56 UTC 2016


Amitabha,
 I am looking at integrating NAT with OVN. I have a use case of Kubernetes.
But the modeling should also work with OpenStack. So I would like to know a
little bit about your plans around OpenStack + NAT with OVN. So if you are
around, ping me at "shettyg" (openvswitch or openstack-neutron-ovn) in IRC.

Thanks,
Guru

On 16 December 2015 at 14:15, Amitabha Biswas <azbiswas at gmail.com> wrote:

> Hi Jarno,
>
> As part of OVN integration in Openstack, I’ve been trying to setup
> OpenFlow NAT rules and run the system-test-suite 33:
> system-traffic.at:1396 conntrack - simple SNAT. Using the latest (as of
> 12/15/2015) ovs master branch on Ubuntu Linux 4.3 kernels (from
> kernel.ubuntu.com <http://kernel.ubuntu.com/>) fail with the following
> errors:
>
> > 2015-12-16T03:05:13.945Z|00037|connmgr|INFO|br0<->unix: sending
> OFPBAC_BAD_TYPE error reply to OFPT_FLOW_MOD message
> > 2015-12-16T03:05:13.945Z|00038|vconn|DBG|unix: sent (Success):
> OFPT_ERROR (OF1.4) (xid=0x2): OFPBAC_BAD_TYPE
>
> related to the flow
> in_port=1,ip,action=ct(commit,zone=1,nat(src=10.1.1.240-10.1.1.255)),2
>
> Am I missing some conntrack kernel patches to get the OpenFlow NAT rules
> installed? If yes, how would one get those patches and which kernel images
> would contain them.
>
> Thanks
> Amitabha
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