If you're really serious about doing a multiple IP address per host thing
for more than a trivial number of host addresses, then we need a different
hack. A friend of mine who had this problem decided that what he would do
is hack things up so that the kernel would respond to all host addresses
given a number and a mask.

For example, 192.1.2.8  255.255.255.248 would respond to
192.1.2.{8,9,10,11,12,13,14,15}. Of course, host software which needed to
react differently to different addresses (e.g. different domain names)
would have to be hacked to check at which host address they were contacted.

Otherwise, your /etc/rc* script change seems to be a clean way of handling
this configuration option. Um, unless you want different netmasks per
address?

Erik