Edit Profile vim / etc / sysconfig / network-scripts / ifcfg-eth1 (MAC address to be added if necessary)
TYPE=Ethernet BOOTPROTO=static DEFROUTE=yes NAME=eth1 DEVICE=eth1 ONBOOT=yes IPADDR0=192.168.100.207 IPADDR1=192.168.100.208 IPADDR2=192.168.100.209 NETMASK0=255.255.255.0 NETMASK1=255.255.255.0 NETMASK2=255.255.255.0 GATEWAY0= 192.168 . 100.254 DNS1 = 8.8 . 8.8
As described above, restart the card into effect, different IP can set different masks and gateways, using ip addr validation information.