OK, ignore it, I found that I did not set wildcard value correctly Best,
-- Nan Zhu School of Computer Science, McGill University On Monday, December 2, 2013 at 8:27 AM, Nan Zhu wrote: > Hi, all > > I’m going to build a match object which only cares about nw_src and nw_dst > > As the wiki says, I only need to wildcard other fields by setting them as > None, > > I firstly build a match from from_packet, and then set the fields as None, > however I always receive warnings like Fields ignored due to unspecified > nw_src, nw_dst > > I checked pox code > > for name in ofp_match_data.keys(): > if getattr(self,name) is None: continue > if getattr(om,name) is not None: continue > wcs.append(name) > > msg = msg + " ".join(wcs) > > > I’m confused by this part, when getattr(self, name) is not None, it will be > put in the wcs….why? > > Thank you very much > > Best, > > -- > Nan Zhu > School of Computer Science, > McGill University > > >