If you find that your ethernet networking device is not activating on system boot, you can configure the device to be enabled at boot by performing the following –
List your ethernet interface
Enable boot activation on the ethernet interface
nmcli con mod enp0s1 connection.autoconnect yes
A vulnerability has been found in the DCCP Linux kernel module which allows a local, unprivileged user to escalate privileges on a Linux system. DCCP is used to manage network traffic congestion in the application layer.
This issue affects Red Hat and CentOS releases 5, 6, and 7, as well as other Linux distributions. You should update your Kernel as soon as possible.
To mitigate without a Kernel upgrade, run the following command and reboot your system:
echo "install dccp /bin/true" >> /etc/modprobe.d/disable-dccp.conf
This will disable the DCCP module from loading on boot.
More information can be found here on Red Hat’s website.