While doing some performance tuning and such on a 6.7 physical machine with a pair of Intel 10Gb NICs (82599s), someone advised trying the latest 5.x driver from Intel which sounded like a good idea (either it would be worth it or not). Unfortunately this didn't solve what we were looking to solve and folks concerned with the whole kernel upgrade conundrum suggest just putting back the old ixgbe module. Alas, there seems to be no well-documented method (at least from Intel or plenty or searching the web), so does anyone have a clear cut way to drop this "updated" version and make it use the default one?

modinfo ixgbe

filename: /lib/modules/2.6.32-573.el6.x86_64/updates/drivers/net/ethernet/intel/ixgbe/ixgbe.ko
version: 5.0.4

What we need to go back to is:
filename: /lib/modules/2.6.32-573.el6.x86_64/kernel/drivers/net/ixgbe/ixgbe.ko
version: 4.0.1-k

thanks!