Now I will replace the system kernel to 4.9.0-1...
Start installing
Retrieving http://soft.wellphp.com/kernels/x86_64/kernel-ml-4.9.0-1.el6.x86_64.rpm
Preparing... ########################################### [100%]
1:kernel-ml ########################################### [100%]
Checking if the installtion is ok
ls: cannot access /etc/grub2.cfg: No such file or directory
Installation is completed, now you can reboot the system.
You should check BBR after the rebooting using command: