Multiple IP address (alias) - 1 NIC - setting default outgoing IP

I have a mac that I use for a web server. I have two IP addresses on the same interface, say x.x.x.5 and x.x.x.6, Usually when starting a connection out of this box, I get x.x.x.5 as my IP address. Occasionally though, I end up with x.x.x.6 which causes me some grief with some rules for ssh etc.
The x.x.x.5 address if 'first' in the list of Network Port configurations, but on these rare occasions, where I have trouble, ifconfig obviously shows x.x.x.6 first. If I 'ifconfig en1 -alias x.x.x.6' and 'ifconfig en1 alias x.x.x.6' the x.x.x.5 address gets it's first place again and everything is rosy again.
Any ideas (aside from writing scripts to test and fix the condition) how to keep the order that I want??
Thanks,
Doug
G4   Mac OS X (10.4.8)  

The question may well be how you're setting up the
additional IP address.
Are you using a startup script to execute the
ifconfig commands?
Have you duplicated your interface in System
Preferences?
Are you using /etc/IPAliases to configure them?
I have set them up with the System Preferences pane.
There is no /etc/IPAliases on my system.
IPAliases appears to be a Mac OS X Server thing by the looks of this:
file:///Developer/ADC%20Reference%20Library/documentation/Darwin/Reference/ManPa ges/man5/IPAliases.conf.5.html

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