[ovs-dev] [PATCH 1/2] openvswitch: support asymmetric conntrack

David Miller davem at davemloft.net
Thu Dec 5 00:32:32 UTC 2019


From: Aaron Conole <aconole at redhat.com>
Date: Tue,  3 Dec 2019 16:34:13 -0500

> The openvswitch module shares a common conntrack and NAT infrastructure
> exposed via netfilter.  It's possible that a packet needs both SNAT and
> DNAT manipulation, due to e.g. tuple collision.  Netfilter can support
> this because it runs through the NAT table twice - once on ingress and
> again after egress.  The openvswitch module doesn't have such capability.
> 
> Like netfilter hook infrastructure, we should run through NAT twice to
> keep the symmetry.
> 
> Fixes: 05752523e565 ("openvswitch: Interface with NAT.")
> Signed-off-by: Aaron Conole <aconole at redhat.com>
> ---
> NOTE: this is a repost to see if the email client issues go away.

Applied and queued up for -stable.


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