Messages in this thread | | | From | Stephen Hemminger <> | Subject | Re: incorrect TCP checksum on sent TCP-MD5 packets (2.6.20-rc5) | Date | Mon, 15 Jan 2007 10:15:22 -0800 |
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On Sun, 14 Jan 2007 20:32:34 +0100 Torsten Luettgert <t.luettgert@pressestimmen.de> wrote:
> Hi, > > I'm using the new TCP-MD5 option in 2.6.20-rc4 and rc5 > to talk BGP to cisco routers. > My box connects to the cisco, and the handshake looks fine: > SYN, SYN/ACK, ACK all have md5 option and correct TCP checksums. > > All packets after that, i.e. the ones with payload data, > have wrong TCP checksums, quoth wireshark. > The same happens if the cisco connects: the first, "empty" packet > is ok, packets with payload aren't. > > Am I doing something wrong? Or is this a bug? > > I'll gladly send tcpdumps if it helps. > > Thanks for your help, > Torsten
Are you running over a device that does checksum offload?
-- Stephen Hemminger <shemminger@osdl.org> - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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