Setting up 2 IP address on "One" NIC. This example is on ethernet.
STEP 1 (The settings for the initial IP address)
$ cat /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
BOOTPROTO=static
BROADCAST=192.168.99.255
IPADDR=192.168.1.155
NETMASK=255.255.252.0
NETWORK=192.168.1.0
ONBOOT=yes
STEP 2 (2nd IP address: )
$ cat /etc/sysconfig/network-scripts/ifcfg-eth0:1
DEVICE=eth0:1
BOOTPROTO=static
BROADCAST=192.168.99.255
IPADDR=192.168.1.182
NETMASK=255.255.252.0
NETWORK=192.168.1.0
ONBOOT=yes
SUMMARY Note, in STEP 1 the filename is "ifcfg-eth0", whereas in
STEP 2 it's "ifcfg-eth0:1" and also not the matching
entries for "DEVICE=...". Also, obviously, the
"IPADDR" is different as well.
Related links:
