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<TITLE>RE: [Vpn-help] Bluescreen with 2.1.0-rc2</TITLE>
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<P><FONT SIZE=2>>-----Original Message-----</FONT>
<BR><FONT SIZE=2>>From: mgrooms [<A HREF="mailto:mgrooms@shrew.net">mailto:mgrooms@shrew.net</A>] </FONT>
<BR><FONT SIZE=2>>Sent: Tuesday, 24 June 2008 1:58 AM</FONT>
<BR><FONT SIZE=2>>To: Joerg de la Haye; matthew_carle@hotmail.com</FONT>
<BR><FONT SIZE=2>>Cc: vpn-help@lists.shrew.net</FONT>
<BR><FONT SIZE=2>>Subject: Re: [Vpn-help] Bluescreen with 2.1.0-rc2</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>On Tue, 17 Jun 2008 21:53:09 +0200, Joerg de la Haye <haye@lab-quade.de></FONT>
<BR><FONT SIZE=2>>wrote:</FONT>
<BR><FONT SIZE=2>>> Hi list,</FONT>
<BR><FONT SIZE=2>>> </FONT>
<BR><FONT SIZE=2>>> with 2.1.0-rc2 I get a bluescreen under certain reproduceable</FONT>
<BR><FONT SIZE=2>>> circumstances. The error message is "IRQL_not_less_or_Equal" in</FONT>
<BR><FONT SIZE=2>>> conjuction with ndis.sys, and I guess it has to do with the ndis-changes</FONT>
<BR><FONT SIZE=2>>> from rc2, as it didn't occur with earlier versions.</FONT>
<BR><FONT SIZE=2>>> </FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>Joerg & Matthew,</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>I was just doing a bit of research on the problem you reported. My</FONT>
<BR><FONT SIZE=2>>assumption is that your network card is an integrated onboard ethernet</FONT>
<BR><FONT SIZE=2>>controller. Maybe in a laptop? I was hoping to purchase a card that uses</FONT>
<BR><FONT SIZE=2>>the same hardware and driver but this may prove to be difficult.</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>Its difficult to tell what the problem may be unless I can reproduce the</FONT>
<BR><FONT SIZE=2>>problem using a machine that is connected to a kernel debugger. My</FONT>
<BR><FONT SIZE=2>>suspicion is that this is related to the task offload options of the</FONT>
<BR><FONT SIZE=2>>driver. The LWF driver emulates TCP offload but may have problems with</FONT>
<BR><FONT SIZE=2>>other hardware features.</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>Could you please try to disable the IPv4 Large Send Offload on the physical</FONT>
<BR><FONT SIZE=2>>NIC driver and let me know if this helps the situation? There may be other</FONT>
<BR><FONT SIZE=2>>offload options that you can disable for testing as well. If this does work</FONT>
<BR><FONT SIZE=2>>around your problem, then I will know what to work on.</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>Thanks,</FONT>
<BR><FONT SIZE=2>></FONT>
<BR><FONT SIZE=2>>-Matthew</FONT>
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<P><FONT SIZE=2>Hi,</FONT>
</P>
<P><FONT SIZE=2>My network controller is onboard, in a desktop PC. The details are:</FONT>
</P>
<P><FONT SIZE=2>Realtek RTL8168B/8111B Family PCI-E Gigabit Ethernet NIC (NDIS 6.0)</FONT>
<BR><FONT SIZE=2>Driver Provider: Realtek</FONT>
<BR><FONT SIZE=2>Driver Version: 6.206.502.2008</FONT>
</P>
<P><FONT SIZE=2>I don't have time right now to try these debugging suggestions, but will try to look into it when I get a chance.</FONT>
</P>
<P><FONT SIZE=2>Matthew.</FONT>
</P>
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