Hi guys,

I recently sent a new version of a document describing proposed OVN/OVS compatibility [1]. In it, I suggested that when we add new OpenFlow capabilities to OVS, then OVN needs to probe OVS for the OpenFlow capabilities at startup. This way we can know whether we have the capability, can log an informational message, and can just generally be as graceful as possible.

Numan brought up that the ability to probe at runtime for an OpenFlow feature may not exist yet. I'm aware right now that we could attempt to program a flow that uses the capability we're interested in and see if it succeeds. But I was wondering if there's a more formal way of doing it.

Mark Michelson

[1] http://patchwork.ozlabs.org/patch/1159217/
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