Thanks for your response, but, I don't see how iptables is necessary for what I require. In some way (that isn't documented, afaik) the LFS network script(s) provide the functionality I need, I just don't know where/how to put the necessary configuration information.
[root@fo ~]# ls -l /etc/sysconfig/network-devices/ifconfig.eth0/
-rw-r--r-- 1 root root 101 Nov 18 02:48 ipv4
Do I create multiple ipv4 files? What will the new ones be named? Do I create multiple ifconfig.eth0 directories, naming them ifconfig.eth0:0, 1, 2, etc. ?
Based from reading the scripts themselves, I think
that the scripts do not, in any way, require the name of the file to be 'ipv4'. I am pretty sure that, I could rename the ipv4 file I have above to my main IP. Then, I would just create as many other files as I needed for the remaining IPs.
But I'll wait to see what anyone else has to say.