Multiple IP addresses on the one network interface eth0 CentOS
if you need to assign several IP addresses to the 1 network interface on your dedicated server you can do it in several ways:
1. create eth0:1 config file
cp /etc/sysconfig/network-scripts/ifcfg-eth0 /etc/sysconfig/network-scripts/ifcfg-eth0:1
Edit ifcfg-eth0:1 and change IP and DEVICE section. Also GW if need.For example:
DEVICE=eth0:1 BOOTPROTO=static IPADDR=192.168.0.15 NETMASK=255.255.255.0 ONBOOT=yes
Restart network:
service network restart
check with
ifconfig ip addr list dev eth0
2.OR: Run the next command:
ifconfig eth0:1 10.10.10.45 netmask 255.255.255.0 up
3. OR: Another command:
ip addr add 10.20.30.176/24 dev eth0