This instruction loads "hot" parameters without service restart:

service fastdpi reload

If this instruction is absent, the following instruction gives the similar effect:

kill -HUP 555
here 555 - is PID of the fastdpi process

However it is better to update DPI to version 1.0.

Install utilities by the instruction:

yum install dpiutils

"Vasexperts" repository must be attached if required:

rpm --import http://vasexperts.ru/centos/RPM-GPG-KEY-vasexperts.ru
rpm -Uvh http://vasexperts.ru/centos/6/x86_64/vasexperts-repo-1-0.noarch.rpm

1. In case your network driver can not be loaded after the kernel's update, you can try to resolve the issue by yourself:

ls /lib/modules/`uname -r`/extra

If kernel modules pf_ring.ko and igb.ko (or ixgbe.ko for 10G cards) are not present in this directory, please copy them from the similar directory of the previous kernel version:

find /lib/modules -name pf_ring.ko
cd path_found
cp pf_ring.ko /lib/modules/`uname -r`/extra
cp igb.ko /lib/modules/`uname -r`/extra # or ixgbe

and execute these instructions:

depmod -a
modprobe pf_ring
modprobe igb # or modprobe ixgbe

2. If your network card supports bypass functionality: you need to recover the bypass driver as well.

To find the driver:

find /lib/modules -name bpctl_mod\*

Copy it to extra:

cp bpctl_mod.ko /lib/modules/`uname -r`/extra
depmod -a

To verify operation:

bpctl_start
bpctl_util all get_bypass

Please contact tech support if these steps do not help.