It is possible to have multiple IP addresses on one nick. On RedHat based distributions, all you need to do is create a file is copy /etc/sysconfig/ifcfg-eth0 to /etc/sysconfig/ifcfg-eth0:N and edit it afterwards fixing up the values of IPADDR and DEVICE ( DEVICE should be eth0:N) - N here is the number of the alias , the first one would be eth0:0, then eth0:1, etc. Make sure to do "service network restart", and it is recommended that you hang around the physical console of the machine just in case you mess up and lose your network connection. I do not use GUI, but there is probably a good way to do it with GUI to.
On other distributions, the method would be slightly different, but the idea is the same do whatever it takes to make ifconfig eth0:0 ip_addr netmask netmask_val happen during network configuration at bootup.
-- Sasha Pachev Create online surveys at http://www.surveyz.com/
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