Date: Sat, 30 Oct 2021 16:50:34 -0700 From: brian <brian@sonicboom.org> To: stable@freebsd.org Subject: Re: IPv6 checksum errors with divert Message-ID: <184f1bd0-0d96-7e6a-7b8e-921874ddc8c5@sonicboom.org> In-Reply-To: <YX3WQ8NUHZR24n59@gate.intra.daemon.contact>
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Maybe with a tcpdump or packet capture search for http error codes; https://developer.mozilla.org/en-US/docs/Web/HTTP/Status has a list. 400 errors are what usually lead to errors clients observe while the server is still alive. Brian On 10/30/2021 4:33 PM, Peter wrote: > Hi Andrey, hi all, > > there is at least one further issue with divert (and dummynet) > and IPv6: > > If I put EITHER a divert OR a dummynet pipe/queue into the OUTgoing > (layer3) ruleset to the uplink interface, then Youtube is not able to > insert their advertisments into playback, and may hang entirly on > playback. > > That seems to not happen due to timing or bandwith issues, but due to > the sheer existance of a dummynet (or divert). And if I move the > dummynet to the incoming, INTRAnet-facing side of the router, the > problem does not appear. > > So there must still be some other bit in the IPv6 (or in the mbuf?) > that gets improperly mangled during divert and also during dummynet. > > It appears a bit difficult to hunt that one down, due to the sheer > amount of traffic involved in YT streaming, and also since I do not > know exactly for what to look... > > Any helpful ideas are welcome. > > Cheerio, > PMc >home | help
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