[ovs-dev] OFPFMFC_OVERLAP Error

[Ben Pfaff]

On Tue, Dec 02, 2014 at 11:30:26AM -0800, Ben Pfaff wrote:
> On Mon, Dec 01, 2014 at 10:50:45PM -0800, varanasi sandhya wrote:
> > OFPFF_CHECK_OVERLAP flag Issue:
> > 
> > When OFPFF_CHECK_OVERLAP flag is set at RYU controller in ofctl_v1_3.py
> > code in the mod_flow_entry definition, OVS should ideally return
> > OFPFMFC_OVERLAP error on inserting a duplicate flow with same priority and
> > match. But instead the new flow entry just replaces the old flow.
> 
> Do you have evidence to support this interpretation of the OpenFlow
> specification?

In fact, this is an unresolved question in the OpenFlow specification
working group.  Open issue EXT-406 addresses it.  I just added a
comment to try to revive the issue.