linux offloading off
# switch off offloading
/sbin/ethtool --offload eth0 rx off tx off;
/sbin/ethtool -K eth0 tso off;
/sbin/ethtool -K eth0 gso off;
/sbin/ethtool -K eth0 gro off;
/sbin/ethtool --offload eth1 rx off tx off;
/sbin/ethtool -K eth1 tso off;
/sbin/ethtool -K eth1 gso off;
/sbin/ethtool -K eth1 gro off;