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Date: Wed, 01 Oct 2014 09:32:43 -0700 From: Rick Jones <rick.jones2@...com> To: David L Stevens <david.stevens@...cle.com>, netdev@...r.kernel.org CC: davem@...emloft.net Subject: Re: [PATCH net-next] udp: increment UDP_NO_PORTS when dropping unmatched multicasts On 10/01/2014 08:54 AM, David L Stevens wrote: > I think this would have the unpleasant side-effect of incrementing a drop > stat when we have not joined a multicast group that has UDP traffic, but the > interface is in promiscuous mode. Also, false positives for the multicast > address filter. > > Multicast address filters are not perfect matches, so it is "normal" to receive > multicasts and broadcasts that are not addressed to our host. I'm not sure those > should count as "noports" any more than traffic addressed to someone else's IP > address if we're in promiscuous mode should. > > In the multicast case, it would really only make sense if we have actually joined > the group it's addressed to. Do you think an "ignored" statistic would be appropriate then? rick -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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