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Open Source and information security mailing list archives
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Date: Fri, 08 Jun 2007 14:33:07 +0300 From: Baruch Even <baruch@...en.org> To: Herbert Xu <herbert@...dor.apana.org.au> CC: netdev@...r.kernel.org Subject: Re: Multicast and hardware checksum Baruch Even wrote: > Herbert Xu wrote: >> On Fri, Jun 08, 2007 at 02:02:27PM +0300, Baruch Even wrote: >>> As far as IGMP and multicast handling everything works, the packets >>> are even forwarded over the ppp links but they arrive to the client >>> with a bad checksum. I don't have the trace in front of me but I >>> believe it was the UDP checksum that failed. >> >> What kind of a ppp device is this? >> >> If you run a tcpdump either side of the ppp link do you see the same >> UDP checksum value? > > This is a pptp link. I've checked the checksum on the receive side, I > don't know on the sender side and I'll only be able to try it on Sunday. For completeness, the clients are Windows XP clients and the server is a Linux machine. The tunnel is mppe encrypted so I believe that what goes out on the client is the same as what got in on the server. Baruch - 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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