On Thu, Nov 19, 2020 at 08:31:44AM -0500, Ihar Hrachyshka wrote:
> On Thu, Nov 19, 2020 at 12:51 AM Ben Pfaff <[email protected]> wrote:
> >
> > On Wed, Nov 18, 2020 at 10:35:01PM -0500, Ihar Hrachyshka wrote:
> > > It's a legal setup where tunnel ports with the same config are created
> > > on different bridges served by Open vSwitch. Specifically, multiple
> > > OVN controllers may emulate multiple chassis running on the same
> > > physical host, in which case they may need to create separate tunnel
> > > ports to connect to the same remote chassis on their respective
> > > bridges.
> > >
> > > Signed-off-by: Ihar Hrachyshka <[email protected]>
> >
> > That makes sense for sending packets, but which one is supposed to
> > receive a packet when one arrives for that tunnel?
> >
> 
> If we are talking in OVN context, each virtual ovn-controller chassis
> on the same host has to have a different IP / port to distinguish
> between chassis. I don't think it's a useful configuration to have two
> two incoming tunnel ports with the same config for the same IP that
> are not served by separate DST IP addresses.

I think that this code rejects tunnel ports with exactly the same
configuration, though.  If the two ports were configured with different
local IP addresses, then this code would not flag a conflict.  Do I
misunderstand?
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