Linux
Second Network Card Not Being Detected You have dual onboard NIC and ifconfig displays only one interface (eno1) in Ubuntu. eno1 is embedded (onboard) Network Interface Card. * Make sure Linux able “see” your networking hardware sudo lspci | grep Ether * Add eno2 in Interfaces file: /etc/network/interfaces auto eno2 iface
Linux
Restarting an interface in Ubuntu Server How to restart a network in Ubuntu Server without reboot sudo ifdown eth0 && sudo ifup eth0
CentOS
Issue: CentOS Virtual Machine eth0 interface not starting at boot time and you need to manually login from VMware console start it every time. Solving: make sure you have: ONBOOT=yes in /etc/sysconfig/network-scripts/ifcfg-eth0 file. If you don’t have ifcfg-eth0 file you need to create in /etc/