I have used ethtool to disable TCP offloading on XenServer 6.2 host nic's.
The offload config on the host are by default:
Offload parameters for eth0:
I use the following command to set rx-checksumming, tx-checksumming, scatter-gather & generic-segmentation-offload to off:
# ethtool -K eth0 rx off tx off sg off tso off gso off
When I check the offload config again it looks correct. Everything is off.
After rebooting the offload config goes back to the default settings.
Does anyone know how to make the offload settings permanent?