[Fwd: [BUG:] forcedeth: MCP55 not allowing DHCP]

From: Casey Dahlin
Date: Thu Sep 20 2007 - 23:47:42 EST


Apparently I posted this in the middle of an unrelated thread by mistake. If this is the third message you are getting in regard to this issue, sorry :( Just trying to get it in the right place.

-------- Original Message --------
Subject: [BUG:] forcedeth: MCP55 not allowing DHCP
Date: Tue, 11 Sep 2007 18:05:15 -0400
From: Casey Dahlin <cjdahlin@xxxxxxxx>
To: Linux Kernel <linux-kernel@xxxxxxxxxxxxxxx>




I have an Asus Striker Extreme motherboard with two built in MCP55 GigE interfaces. When I build with the original Fedora 7 release kernel ( ftp://ftp.belnet.be/linux/fedora/linux/releases/7/Fedora/i386/os/Fedora/kernel-2.6.21-1.3194.fc7.i686.rpm ) everything works fine. However, when I boot with any updated kernels or any other kernel (have tried building from several points in the linus git tree between 2.6.20 and .23-rc3, and 2.6.21.2 in -stable) I cannot get an IP address via dhcp. There is no error in dmesg. The card shows a link and otherwise appears to be working, but it is as if the dhcp server has been removed from the network.

On a running system there is no indication that this is a kernel bug at all, however by varying only the kernel the bug appears and disappears. I've run all these tests repeatedly with no intervening updates of any other packages.

As I said I attempted to build 2.6.21.2 ( the point of divergence between the Fedora kernel in question and -stable ) and still the card did not work. I will next attempt to manually build the rpm for the release kernel. If this works I will try experimenting with the included patches to narrow it down, but at this point I'm at a complete loss.

-Casey Dahlin
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