[ovs-discuss] Fwd: OVS 0.90.7 build fails on kernel 2.6.31-14-generic

Prateek Jain prateek4tech at gmail.com
Wed Mar 24 00:03:40 UTC 2010

Hi Ben,

Indeed having the 'ofdatapath' module loaded was stopping OpenVSwitch from
getting loaded.
The 'dmesg' displayed the following msg

'openvswitch_mod: exports duplicate symbol dp_ioctl_hook (owned by

once I unloaded 'ofdatapath', I was able to load openVswitch.


On Tue, Mar 23, 2010 at 4:48 PM, Ben Pfaff <blp at nicira.com> wrote:

> On Tue, Mar 23, 2010 at 04:27:38PM -0700, Prateek Jain wrote:
> > Thanks, see the attached image, the vermagic output for an already loaded
> > module is same as the kernel module complied by me.
> >
> > What else could be causing it ?
> I can see that you have the "ofdatapath" module from OpenFlow also
> loaded.  I don't think that Open vSwitch will work at the same thing as
> OpenFlow.  I don't think it would cause this problem, though.
> You may be able to find out more information from "dmesg".
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